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385719066883968 = 27313913615309663
BaseRepresentation
bin101011110110011110011011…
…1111101101111011110000000
31212120201101022222010012022220
41113230330313331233132000
5401024110122110241333
63444204520524131040
7144150166024210236
oct12754746775573600
91776641288105286
10385719066883968
111019a15a0642964
1237316b33096a80
131372c1c8a5308c
146b36c8c462956
152e8d68891d8b3
hex15ecf37f6f780

385719066883968 has 128 divisors (see below), whose sum is σ = 1032695666150400. Its totient is φ = 127554222612480.

The previous prime is 385719066883967. The next prime is 385719066883999. The reversal of 385719066883968 is 869388660917583.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385719066883967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69989905 + ... + 75299567.

It is an arithmetic number, because the mean of its divisors is an integer number (8067934891800).

Almost surely, 2385719066883968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385719066883968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516347833075200).

385719066883968 is an abundant number, since it is smaller than the sum of its proper divisors (646976599266432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385719066883968 is a wasteful number, since it uses less digits than its factorization.

385719066883968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5311180 (or 5311168 counting only the distinct ones).

The product of its (nonzero) digits is 22574039040, while the sum is 87.

The spelling of 385719066883968 in words is "three hundred eighty-five trillion, seven hundred nineteen billion, sixty-six million, eight hundred eighty-three thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 128 139 192 278 384 417 556 834 1112 1361 1668 2224 2722 3336 4083 4448 5444 6672 8166 8896 10888 13344 16332 17792 21776 26688 32664 43552 53376 65328 87104 130656 174208 189179 261312 378358 522624 567537 756716 1135074 1513432 2270148 3026864 4540296 5309663 6053728 9080592 10619326 12107456 15928989 18161184 21238652 24214912 31857978 36322368 42477304 63715956 72644736 84954608 127431912 169909216 254863824 339818432 509727648 679636864 738043157 1019455296 1476086314 2038910592 2214129471 2952172628 4428258942 5904345256 7226451343 8856517884 11808690512 14452902686 17713035768 21679354029 23617381024 28905805372 35426071536 43358708058 47234762048 57811610744 70852143072 86717416116 94469524096 115623221488 141704286144 173434832232 231246442976 283408572288 346869664464 462492885952 693739328928 924985771904 1004476736677 1387478657856 2008953473354 2774957315712 3013430210031 4017906946708 6026860420062 8035813893416 12053720840124 16071627786832 24107441680248 32143255573664 48214883360496 64286511147328 96429766720992 128573022294656 192859533441984 385719066883968