12564588764 has 48 divisors (see below), whose sum is σ = 28238827008. Its totient is φ = 4754490048.

The previous prime is 12564588761. The next prime is 12564588781. The reversal of 12564588764 is 46788546521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12564588761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 742022 + ... + 758765.

It is an arithmetic number, because the mean of its divisors is an integer number (588308896).

Almost surely, 2^12564588764 is an apocalyptic number.

12564588764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12564588764 is an abundant number, since it is smaller than the sum of its proper divisors (15674238244).

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

12564588764 is a wasteful number, since it uses less digits than its factorization.

12564588764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500834 (or 1500832 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 56.

The spelling of 12564588764 in words is "twelve billion, five hundred sixty-four million, five hundred eighty-eight thousand, seven hundred sixty-four".