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315172600668 = 223310739768699
BaseRepresentation
bin1001001011000011100…
…00000011101101011100
31010010111220212000001000
410211201300003231130
520130433141210133
6400442134350300
731525161621612
oct4454160035534
91103456760030
10315172600668
111117337977a2
12510ba7bb390
132394a35a923
141137c2556b2
1582e9719413
hex4961c03b5c

315172600668 has 96 divisors (see below), whose sum is σ = 826840224000. Its totient is φ = 103812020928.

The previous prime is 315172600661. The next prime is 315172600669. The reversal of 315172600668 is 866006271513.

315172600668 is a `hidden beast` number, since 31 + 5 + 1 + 7 + 2 + 600 + 6 + 6 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315172600661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4553383 + ... + 4622081.

It is an arithmetic number, because the mean of its divisors is an integer number (8612919000).

Almost surely, 2315172600668 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 315172600668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413420112000).

315172600668 is an abundant number, since it is smaller than the sum of its proper divisors (511667623332).

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

315172600668 is a wasteful number, since it uses less digits than its factorization.

315172600668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69216 (or 69208 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 315172600668 in words is "three hundred fifteen billion, one hundred seventy-two million, six hundred thousand, six hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 107 108 214 321 397 428 642 794 963 1191 1284 1588 1926 2382 2889 3573 3852 4764 5778 7146 10719 11556 14292 21438 42479 42876 68699 84958 127437 137398 169916 206097 254874 274796 382311 412194 509748 618291 764622 824388 1146933 1236582 1529244 1854873 2293866 2473164 3709746 4587732 7350793 7419492 14701586 22052379 27273503 29403172 44104758 54547006 66157137 81820509 88209516 109094012 132314274 163641018 198471411 245461527 264628548 327282036 396942822 490923054 736384581 793885644 981846108 1472769162 2918264821 2945538324 5836529642 8754794463 11673059284 17509588926 26264383389 35019177852 52528766778 78793150167 105057533556 157586300334 315172600668