12534520452564 has 48 divisors (see below), whose sum is σ = 32446832624640. Its totient is φ = 3733960892640.

The previous prime is 12534520452457. The next prime is 12534520452683. The reversal of 12534520452564 is 46525402543521.

It is a super-2 number, since 2×12534520452564² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804725164 + ... + 804740739.

It is an arithmetic number, because the mean of its divisors is an integer number (675975679680).

Almost surely, 2^{12534520452564} is an apocalyptic number.

It is an amenable number.

12534520452564 is an abundant number, since it is smaller than the sum of its proper divisors (19912312172076).

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

12534520452564 is a wasteful number, since it uses less digits than its factorization.

12534520452564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609465980 (or 1609465978 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 48.

The spelling of 12534520452564 in words is "twelve trillion, five hundred thirty-four billion, five hundred twenty million, four hundred fifty-two thousand, five hundred sixty-four".