264931215388 has 24 divisors (see below), whose sum is σ = 532238508032. Its totient is φ = 113032790064.

The previous prime is 264931215331. The next prime is 264931215389. The reversal of 264931215388 is 883512139462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264931215389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21208620 + ... + 21221107.

Almost surely, 2^264931215388 is an apocalyptic number.

264931215388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

264931215388 is an abundant number, since it is smaller than the sum of its proper divisors (267307292644).

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

264931215388 is a wasteful number, since it uses less digits than its factorization.

264931215388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42429961 (or 42429959 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 52.

The spelling of 264931215388 in words is "two hundred sixty-four billion, nine hundred thirty-one million, two hundred fifteen thousand, three hundred eighty-eight".