12815264331 has 12 divisors (see below), whose sum is σ = 18512432952. Its totient is φ = 8542819296.

The previous prime is 12815264317. The next prime is 12815264333. The reversal of 12815264331 is 13346251821.

12815264331 is a `hidden beast` number, since 1 + 2 + 8 + 1 + 5 + 2 + 643 + 3 + 1 = 666.

It is not a de Polignac number, because 12815264331 - 2⁵ = 12815264299 is a prime.

It is a super-2 number, since 2×12815264331² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12815264333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76495 + ... + 177431.

It is an arithmetic number, because the mean of its divisors is an integer number (1542702746).

Almost surely, 2^12815264331 is an apocalyptic number.

12815264331 is a deficient number, since it is larger than the sum of its proper divisors (5697168621).

12815264331 is a wasteful number, since it uses less digits than its factorization.

12815264331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115050 (or 115047 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The spelling of 12815264331 in words is "twelve billion, eight hundred fifteen million, two hundred sixty-four thousand, three hundred thirty-one".