15953815932 has 12 divisors (see below), whose sum is σ = 37225570536. Its totient is φ = 5317938640.

The previous prime is 15953815921. The next prime is 15953815949. The reversal of 15953815932 is 23951835951.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664742319 + ... + 664742342.

It is an arithmetic number, because the mean of its divisors is an integer number (3102130878).

Almost surely, 2^15953815932 is an apocalyptic number.

15953815932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15953815932 is an abundant number, since it is smaller than the sum of its proper divisors (21271754604).

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

15953815932 is a wasteful number, since it uses less digits than its factorization.

15953815932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329484668 (or 1329484666 counting only the distinct ones).

The product of its digits is 1458000, while the sum is 51.

The spelling of 15953815932 in words is "fifteen billion, nine hundred fifty-three million, eight hundred fifteen thousand, nine hundred thirty-two".