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12912762593 = 103112524503
BaseRepresentation
bin11000000011010100…
…10001111011100001
31020022220122022020102
430001222101323201
5202421131400333
65533153152145
7634663446113
oct140152217341
936286568212
1012912762593
115526a10725
12260455b655
1312aa2a9333
148a6d3b3b3
1550896dae8
hex301a91ee1

12912762593 has 4 divisors (see below), whose sum is σ = 12925288128. Its totient is φ = 12900237060.

The previous prime is 12912762587. The next prime is 12912762601. The reversal of 12912762593 is 39526721921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39526721921 = 231718553127.

It is a cyclic number.

It is not a de Polignac number, because 12912762593 - 212 = 12912758497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12912762503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6261221 + ... + 6263282.

It is an arithmetic number, because the mean of its divisors is an integer number (3231322032).

Almost surely, 212912762593 is an apocalyptic number.

It is an amenable number.

12912762593 is a deficient number, since it is larger than the sum of its proper divisors (12525535).

12912762593 is a wasteful number, since it uses less digits than its factorization.

12912762593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12525534.

The product of its digits is 408240, while the sum is 47.

The spelling of 12912762593 in words is "twelve billion, nine hundred twelve million, seven hundred sixty-two thousand, five hundred ninety-three".

Divisors: 1 1031 12524503 12912762593