161539118600 has 48 divisors (see below), whose sum is σ = 375613459200. Its totient is φ = 64609624640.

The previous prime is 161539118593. The next prime is 161539118669. The reversal of 161539118600 is 6811935161.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2560637 + ... + 2622963.

It is an arithmetic number, because the mean of its divisors is an integer number (7825280400).

Almost surely, 2^161539118600 is an apocalyptic number.

161539118600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161539118600 is an abundant number, since it is smaller than the sum of its proper divisors (214074340600).

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

161539118600 is a wasteful number, since it uses less digits than its factorization.

161539118600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75302 (or 75293 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 161539118600 in words is "one hundred sixty-one billion, five hundred thirty-nine million, one hundred eighteen thousand, six hundred".