156161660560 has 40 divisors (see below), whose sum is σ = 363445398720. Its totient is φ = 62401087872.

The previous prime is 156161660539. The next prime is 156161660579. The reversal of 156161660560 is 65066161651.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914250 + ... + 1071529.

It is an arithmetic number, because the mean of its divisors is an integer number (9086134968).

Almost surely, 2^156161660560 is an apocalyptic number.

156161660560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156161660560 is an abundant number, since it is smaller than the sum of its proper divisors (207283738160).

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

156161660560 is a wasteful number, since it uses less digits than its factorization.

156161660560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986775 (or 1986769 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 156161660560 in words is "one hundred fifty-six billion, one hundred sixty-one million, six hundred sixty thousand, five hundred sixty".