12523634420 has 24 divisors (see below), whose sum is σ = 28690508448. Its totient is φ = 4554048800.

The previous prime is 12523634413. The next prime is 12523634507. The reversal of 12523634420 is 2443632521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28462586 + ... + 28463025.

It is an arithmetic number, because the mean of its divisors is an integer number (1195437852).

Almost surely, 2^12523634420 is an apocalyptic number.

12523634420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12523634420 is an abundant number, since it is smaller than the sum of its proper divisors (16166874028).

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

12523634420 is a wasteful number, since it uses less digits than its factorization.

12523634420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56925631 (or 56925629 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The spelling of 12523634420 in words is "twelve billion, five hundred twenty-three million, six hundred thirty-four thousand, four hundred twenty".