15955972560 has 120 divisors (see below), whose sum is σ = 58456910304. Its totient is φ = 3868112640.

The previous prime is 15955972559. The next prime is 15955972607. The reversal of 15955972560 is 6527955951.

15955972560 is a `hidden beast` number, since 1 + 5 + 9 + 5 + 5 + 9 + 72 + 560 = 666.

15955972560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a junction number, because it is equal to n+sod(n) for n = 15955972497 and 15955972506.

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 23 ways as a sum of consecutive naturals, for example, 999402 + ... + 1015241.

Almost surely, 2^15955972560 is an apocalyptic number.

15955972560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15955972560 is an abundant number, since it is smaller than the sum of its proper divisors (42500937744).

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

15955972560 is a wasteful number, since it uses less digits than its factorization.

15955972560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014673 (or 2014664 counting only the distinct ones).

The product of its (nonzero) digits is 4252500, while the sum is 54.

The spelling of 15955972560 in words is "fifteen billion, nine hundred fifty-five million, nine hundred seventy-two thousand, five hundred sixty".