161183750090 has 32 divisors (see below), whose sum is σ = 325060504704. Its totient is φ = 57028155840.

The previous prime is 161183750083. The next prime is 161183750137. The reversal of 161183750090 is 90057381161.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19797374 + ... + 19805513.

It is an arithmetic number, because the mean of its divisors is an integer number (10158140772).

Almost surely, 2^161183750090 is an apocalyptic number.

161183750090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161183750090 is an abundant number, since it is smaller than the sum of its proper divisors (163876754614).

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

161183750090 is a wasteful number, since it uses less digits than its factorization.

161183750090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39602942.

The product of its (nonzero) digits is 45360, while the sum is 41.

The spelling of 161183750090 in words is "one hundred sixty-one billion, one hundred eighty-three million, seven hundred fifty thousand, ninety".