161075056164 has 24 divisors (see below), whose sum is σ = 410009234208. Its totient is φ = 48810623040.

The previous prime is 161075056147. The next prime is 161075056201. The reversal of 161075056164 is 461650570161.

It is a happy number.

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, 610132657 + ... + 610132920.

It is an arithmetic number, because the mean of its divisors is an integer number (17083718092).

Almost surely, 2^161075056164 is an apocalyptic number.

It is an amenable number.

161075056164 is an abundant number, since it is smaller than the sum of its proper divisors (248934178044).

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

161075056164 is a wasteful number, since it uses less digits than its factorization.

161075056164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220265595 (or 1220265593 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 161075056164 in words is "one hundred sixty-one billion, seventy-five million, fifty-six thousand, one hundred sixty-four".