12511729072 has 20 divisors (see below), whose sum is σ = 24277303296. Its totient is φ = 6246618560.

The previous prime is 12511729039. The next prime is 12511729073. The reversal of 12511729072 is 27092711521.

It is a happy number.

12511729072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12511729072² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12511729073) 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 3 ways as a sum of consecutive naturals, for example, 566704 + ... + 588367.

Almost surely, 2^12511729072 is an apocalyptic number.

It is an amenable number.

12511729072 is a deficient number, since it is larger than the sum of its proper divisors (11765574224).

12511729072 is a wasteful number, since it uses less digits than its factorization.

12511729072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155756 (or 1155750 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 37.

The spelling of 12511729072 in words is "twelve billion, five hundred eleven million, seven hundred twenty-nine thousand, seventy-two".