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18312730010952 = 23313366431601797
BaseRepresentation
bin1000010100111110000111…
…10001000110010101001000
32101211200100122022020112220
410022133003301012111020
54400013432340322302
6102540430234334040
73600023343526566
oct412370361062510
971750318266486
1018312730010952
115920426752163
12207916828a320
13a2ab6302c130
144744ab478a36
1521b551e374bc
hex10a7c3c46548

18312730010952 has 64 divisors (see below), whose sum is σ = 49304880166080. Its totient is φ = 5634528867072.

The previous prime is 18312730010917. The next prime is 18312730011007. The reversal of 18312730010952 is 25901003721381.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10631718 + ... + 12233514.

It is an arithmetic number, because the mean of its divisors is an integer number (770388752595).

Almost surely, 218312730010952 is an apocalyptic number.

18312730010952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18312730010952 is an abundant number, since it is smaller than the sum of its proper divisors (30992150155128).

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

18312730010952 is a wasteful number, since it uses less digits than its factorization.

18312730010952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638462 (or 1638458 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 18312730010952 in words is "eighteen trillion, three hundred twelve billion, seven hundred thirty million, ten thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 36643 73286 109929 146572 219858 293144 439716 476359 879432 952718 1429077 1601797 1905436 2858154 3203594 3810872 4805391 5716308 6407188 9610782 11432616 12814376 19221564 20823361 38443128 41646722 62470083 83293444 124940166 166586888 249880332 499760664 58694647471 117389294942 176083942413 234778589884 352167884826 469557179768 704335769652 763030417123 1408671539304 1526060834246 2289091251369 3052121668492 4578182502738 6104243336984 9156365005476 18312730010952