161089608800 has 36 divisors (see below), whose sum is σ = 393260009436. Its totient is φ = 64435843200.

The previous prime is 161089608781. The next prime is 161089608817. The reversal of 161089608800 is 8806980161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100680206 + ... + 100681805.

It is an arithmetic number, because the mean of its divisors is an integer number (10923889151).

Almost surely, 2^161089608800 is an apocalyptic number.

161089608800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161089608800 is an abundant number, since it is smaller than the sum of its proper divisors (232170400636).

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

161089608800 is a wasteful number, since it uses less digits than its factorization.

161089608800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201362031 (or 201362018 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 47.

The spelling of 161089608800 in words is "one hundred sixty-one billion, eighty-nine million, six hundred eight thousand, eight hundred".