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68904401496 = 23371783290677
BaseRepresentation
bin100000000101100000…
…1011011101001011000
320120212001210021021020
41000023001123221120
52112104011321441
651353152242440
74656341514630
oct1001301335130
9216761707236
1068904401496
1127249813767
121142bb40420
136661478208
1434993016c0
151bd4348e66
hex100b05ba58

68904401496 has 128 divisors (see below), whose sum is σ = 210962465280. Its totient is φ = 18305611776.

The previous prime is 68904401459. The next prime is 68904401537. The reversal of 68904401496 is 69410440986.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91710 + ... + 382386.

It is an arithmetic number, because the mean of its divisors is an integer number (1648144260).

Almost surely, 268904401496 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 68904401496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105481232640).

68904401496 is an abundant number, since it is smaller than the sum of its proper divisors (142058063784).

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

68904401496 is a wasteful number, since it uses less digits than its factorization.

68904401496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290793 (or 290789 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 68904401496 in words is "sixty-eight billion, nine hundred four million, four hundred one thousand, four hundred ninety-six".

Divisors: 1 2 3 4 6 7 8 12 14 17 21 24 28 34 42 51 56 68 83 84 102 119 136 166 168 204 238 249 332 357 408 476 498 581 664 714 952 996 1162 1411 1428 1743 1992 2324 2822 2856 3486 4233 4648 5644 6972 8466 9877 11288 13944 16932 19754 29631 33864 39508 59262 79016 118524 237048 290677 581354 872031 1162708 1744062 2034739 2325416 3488124 4069478 4941509 6104217 6976248 8138956 9883018 12208434 14824527 16277912 19766036 24126191 24416868 29649054 34590563 39532072 48252382 48833736 59298108 69181126 72378573 96504764 103771689 118596216 138362252 144757146 168883337 193009528 207543378 276724504 289514292 337766674 410145247 415086756 506650011 579028584 675533348 820290494 830173512 1013300022 1230435741 1351066696 1640580988 2026600044 2460871482 2871016729 3281161976 4053200088 4921742964 5742033458 8613050187 9843485928 11484066916 17226100374 22968133832 34452200748 68904401496