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12496379868 = 2233731533213
BaseRepresentation
bin10111010001101011…
…11001111111011100
31012020220010212112000
423220311321333130
5201043033123433
65424000442300
7621446322240
oct135065717734
935226125460
1012496379868
115332976175
122509019390
131241c4cc1b
14867910420
154d2121113
hex2e8d79fdc

12496379868 has 96 divisors (see below), whose sum is σ = 38220779520. Its totient is φ = 3455213760.

The previous prime is 12496379867. The next prime is 12496379887. The reversal of 12496379868 is 86897369421.

12496379868 is a `hidden beast` number, since 12 + 496 + 3 + 79 + 8 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12496379867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243171 + ... + 290042.

It is an arithmetic number, because the mean of its divisors is an integer number (398133120).

Almost surely, 212496379868 is an apocalyptic number.

12496379868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12496379868 is an abundant number, since it is smaller than the sum of its proper divisors (25724399652).

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

12496379868 is a wasteful number, since it uses less digits than its factorization.

12496379868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533264 (or 533256 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The spelling of 12496379868 in words is "twelve billion, four hundred ninety-six million, three hundred seventy-nine thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 27 28 31 36 42 54 62 63 84 93 108 124 126 186 189 217 252 279 372 378 434 558 651 756 837 868 1116 1302 1674 1953 2604 3348 3906 5859 7812 11718 23436 533213 1066426 1599639 2132852 3199278 3732491 4798917 6398556 7464982 9597834 11197473 14396751 14929964 16529603 19195668 22394946 28793502 33059206 33592419 44789892 49588809 57587004 66118412 67184838 99177618 100777257 115707221 134369676 148766427 198355236 201554514 231414442 297532854 347121663 403109028 446299281 462828884 595065708 694243326 892598562 1041364989 1388486652 1785197124 2082729978 3124094967 4165459956 6248189934 12496379868