161580936575 has 24 divisors (see below), whose sum is σ = 212706229680. Its totient is φ = 121339814400.

The previous prime is 161580936457. The next prime is 161580936589. The reversal of 161580936575 is 575639085161.

It is not a de Polignac number, because 161580936575 - 2²⁶ = 161513827711 is a prime.

It is a super-2 number, since 2×161580936575² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161580936575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340496 + ... + 662645.

It is an arithmetic number, because the mean of its divisors is an integer number (8862759570).

Almost surely, 2^161580936575 is an apocalyptic number.

161580936575 is a deficient number, since it is larger than the sum of its proper divisors (51125293105).

161580936575 is a wasteful number, since it uses less digits than its factorization.

161580936575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003547 (or 1003542 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 56.

The spelling of 161580936575 in words is "one hundred sixty-one billion, five hundred eighty million, nine hundred thirty-six thousand, five hundred seventy-five".