12864313136 has 20 divisors (see below), whose sum is σ = 24951123264. Its totient is φ = 6425313600.

The previous prime is 12864313129. The next prime is 12864313157. The reversal of 12864313136 is 63131346821.

It is a super-2 number, since 2×12864313136² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12864313136.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412160 + ... + 442271.

Almost surely, 2^12864313136 is an apocalyptic number.

12864313136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12864313136 is a deficient number, since it is larger than the sum of its proper divisors (12086810128).

12864313136 is an equidigital number, since it uses as much as digits as its factorization.

12864313136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855380 (or 855374 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

Adding to 12864313136 its reverse (63131346821), we get a palindrome (75995659957).

The spelling of 12864313136 in words is "twelve billion, eight hundred sixty-four million, three hundred thirteen thousand, one hundred thirty-six".