15660933960 has 128 divisors (see below), whose sum is σ = 54707892480. Its totient is φ = 3512091648.

The previous prime is 15660933931. The next prime is 15660933971. The reversal of 15660933960 is 6933906651.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131367 + ... + 220406.

It is an arithmetic number, because the mean of its divisors is an integer number (427405410).

Almost surely, 2^15660933960 is an apocalyptic number.

15660933960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15660933960 is an abundant number, since it is smaller than the sum of its proper divisors (39046958520).

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

15660933960 is a wasteful number, since it uses less digits than its factorization.

15660933960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351847 (or 351843 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 48.

The spelling of 15660933960 in words is "fifteen billion, six hundred sixty million, nine hundred thirty-three thousand, nine hundred sixty".