15720551112 has 64 divisors (see below), whose sum is σ = 46364774400. Its totient is φ = 4346694720.

The previous prime is 15720551107. The next prime is 15720551177. The reversal of 15720551112 is 21115502751.

It is a self number, because there is not a number n which added to its sum of digits gives 15720551112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1504062 + ... + 1514477.

It is an arithmetic number, because the mean of its divisors is an integer number (724449600).

Almost surely, 2^15720551112 is an apocalyptic number.

15720551112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15720551112 is an abundant number, since it is smaller than the sum of its proper divisors (30644223288).

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

15720551112 is a wasteful number, since it uses less digits than its factorization.

15720551112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018586 (or 3018582 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 30.

The spelling of 15720551112 in words is "fifteen billion, seven hundred twenty million, five hundred fifty-one thousand, one hundred twelve".