15138877775264 has 24 divisors (see below), whose sum is σ = 29804753214180. Its totient is φ = 7569416641536.

The previous prime is 15138877775239. The next prime is 15138877775269. The reversal of 15138877775264 is 46257777883151.

It can be written as a sum of positive squares in 2 ways, for example, as 14951987568400 + 186890206864 = 3866780^2 + 432308^2 .

It is not an unprimeable number, because it can be changed into a prime (15138877775269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18616082 + ... + 19412270.

Almost surely, 2^{15138877775264} is an apocalyptic number.

It is an amenable number.

15138877775264 is a deficient number, since it is larger than the sum of its proper divisors (14665875438916).

15138877775264 is an equidigital number, since it uses as much as digits as its factorization.

15138877775264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390392 (or 1390384 counting only the distinct ones).

The product of its digits is 553190400, while the sum is 71.

The spelling of 15138877775264 in words is "fifteen trillion, one hundred thirty-eight billion, eight hundred seventy-seven million, seven hundred seventy-five thousand, two hundred sixty-four".