161575576432 has 20 divisors (see below), whose sum is σ = 313080985096. Its totient is φ = 80780483520.

The previous prime is 161575576423. The next prime is 161575576447. The reversal of 161575576432 is 234675575161.

It is a super-2 number, since 2×161575576432² (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 161575576432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271794 + ... + 630097.

Almost surely, 2^161575576432 is an apocalyptic number.

It is an amenable number.

161575576432 is a deficient number, since it is larger than the sum of its proper divisors (151505408664).

161575576432 is a wasteful number, since it uses less digits than its factorization.

161575576432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913096 (or 913090 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 52.

The spelling of 161575576432 in words is "one hundred sixty-one billion, five hundred seventy-five million, five hundred seventy-six thousand, four hundred thirty-two".