15772117172 has 12 divisors (see below), whose sum is σ = 31544234400. Its totient is φ = 6759478776.

The previous prime is 15772117159. The next prime is 15772117199. The reversal of 15772117172 is 27171127751.

15772117172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

15772117172 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 281644922 + ... + 281644977.

It is an arithmetic number, because the mean of its divisors is an integer number (2628686200).

Almost surely, 2^15772117172 is an apocalyptic number.

It is an amenable number.

15772117172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15772117172 is a wasteful number, since it uses less digits than its factorization.

15772117172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563289910 (or 563289908 counting only the distinct ones).

The product of its digits is 48020, while the sum is 41.

The spelling of 15772117172 in words is "fifteen billion, seven hundred seventy-two million, one hundred seventeen thousand, one hundred seventy-two".