12520028664 has 96 divisors (see below), whose sum is σ = 39836487600. Its totient is φ = 3502103040.

The previous prime is 12520028659. The next prime is 12520028671. The reversal of 12520028664 is 46682002521.

It is a happy number.

12520028664 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 2×12520028664² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 597709 + ... + 618300.

Almost surely, 2^12520028664 is an apocalyptic number.

It is an amenable number.

12520028664 is an abundant number, since it is smaller than the sum of its proper divisors (27316458936).

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

12520028664 is a wasteful number, since it uses less digits than its factorization.

12520028664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216045 (or 1216038 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 12520028664 in words is "twelve billion, five hundred twenty million, twenty-eight thousand, six hundred sixty-four".