12564034590 has 32 divisors (see below), whose sum is σ = 30286535040. Its totient is φ = 3335647904.

The previous prime is 12564034541. The next prime is 12564034631. The reversal of 12564034590 is 9543046521.

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, 915660 + ... + 929279.

It is an arithmetic number, because the mean of its divisors is an integer number (946454220).

Almost surely, 2^12564034590 is an apocalyptic number.

12564034590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12564034590 is an abundant number, since it is smaller than the sum of its proper divisors (17722500450).

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

12564034590 is a wasteful number, since it uses less digits than its factorization.

12564034590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845176.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 12564034590 in words is "twelve billion, five hundred sixty-four million, thirty-four thousand, five hundred ninety".