15555015116112 has 80 divisors (see below), whose sum is σ = 41121369938880. Its totient is φ = 5064044891136.

The previous prime is 15555015116083. The next prime is 15555015116117. The reversal of 15555015116112 is 21161151055551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15555015116117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28020508 + ... + 28570244.

It is an arithmetic number, because the mean of its divisors is an integer number (514017124236).

Almost surely, 2^{15555015116112} is an apocalyptic number.

15555015116112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15555015116112 is an abundant number, since it is smaller than the sum of its proper divisors (25566354822768).

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

15555015116112 is a wasteful number, since it uses less digits than its factorization.

15555015116112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563500 (or 563494 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 39.

The spelling of 15555015116112 in words is "fifteen trillion, five hundred fifty-five billion, fifteen million, one hundred sixteen thousand, one hundred twelve".