15120906717904 has 60 divisors (see below), whose sum is σ = 31724925539916. Its totient is φ = 6978611966976.

The previous prime is 15120906717893. The next prime is 15120906717911. The reversal of 15120906717904 is 40971760902151.

It can be written as a sum of positive squares in 6 ways, for example, as 434781984400 + 14686124733504 = 659380^2 + 3832248^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81874114 + ... + 82058590.

Almost surely, 2^{15120906717904} is an apocalyptic number.

It is an amenable number.

15120906717904 is an abundant number, since it is smaller than the sum of its proper divisors (16604018822012).

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

15120906717904 is a wasteful number, since it uses less digits than its factorization.

15120906717904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214824 (or 214805 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 15120906717904 in words is "fifteen trillion, one hundred twenty billion, nine hundred six million, seven hundred seventeen thousand, nine hundred four".