15115516525212 has 48 divisors (see below), whose sum is σ = 35978772588192. Its totient is φ = 4937417954560.

The previous prime is 15115516525171. The next prime is 15115516525231. The reversal of 15115516525212 is 21252561551151.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13951983 + ... + 14996294.

It is an arithmetic number, because the mean of its divisors is an integer number (749557762254).

Almost surely, 2^{15115516525212} is an apocalyptic number.

15115516525212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15115516525212 is an abundant number, since it is smaller than the sum of its proper divisors (20863256062980).

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

15115516525212 is a wasteful number, since it uses less digits than its factorization.

15115516525212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28949158 (or 28949156 counting only the distinct ones).

The product of its digits is 150000, while the sum is 42.

The spelling of 15115516525212 in words is "fifteen trillion, one hundred fifteen billion, five hundred sixteen million, five hundred twenty-five thousand, two hundred twelve".