161107166664 has 24 divisors (see below), whose sum is σ = 436331909910. Its totient is φ = 53702388864.

The previous prime is 161107166663. The next prime is 161107166791. The reversal of 161107166664 is 466661701161.

It can be written as a sum of positive squares in only one way, i.e., 161088244164 + 18922500 = 401358^2 + 4350^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (161107166663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1118799697 + ... + 1118799840.

Almost surely, 2^161107166664 is an apocalyptic number.

It is an amenable number.

161107166664 is an abundant number, since it is smaller than the sum of its proper divisors (275224743246).

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

161107166664 is a wasteful number, since it uses less digits than its factorization.

161107166664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237599549 (or 2237599542 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 161107166664 in words is "one hundred sixty-one billion, one hundred seven million, one hundred sixty-six thousand, six hundred sixty-four".