12511306512 has 30 divisors (see below), whose sum is σ = 35014281822. Its totient is φ = 4170435456.

The previous prime is 12511306487. The next prime is 12511306541. The reversal of 12511306512 is 21560311521.

12511306512 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 1 + 3 + 0 + 651 + 2 = 666.

12511306512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8575500816 + 3935805696 = 92604^2 + 62736^2 .

It is a super-2 number, since 2×12511306512² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 43441893 + ... + 43442180.

Almost surely, 2^12511306512 is an apocalyptic number.

12511306512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12511306512 is an abundant number, since it is smaller than the sum of its proper divisors (22502975310).

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

12511306512 is a wasteful number, since it uses less digits than its factorization.

12511306512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86884087 (or 86884078 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 12511306512 in words is "twelve billion, five hundred eleven million, three hundred six thousand, five hundred twelve".