161788032187724 has 12 divisors (see below), whose sum is σ = 283473077058864. Its totient is φ = 80795724456624.

The previous prime is 161788032187711. The next prime is 161788032187741. The reversal of 161788032187724 is 427781230887161.

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, 24572905607 + ... + 24572912190.

It is an arithmetic number, because the mean of its divisors is an integer number (23622756421572).

Almost surely, 2^{161788032187724} is an apocalyptic number.

It is an amenable number.

161788032187724 is a deficient number, since it is larger than the sum of its proper divisors (121685044871140).

161788032187724 is a wasteful number, since it uses less digits than its factorization.

161788032187724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49145818624 (or 49145818622 counting only the distinct ones).

The product of its (nonzero) digits is 50577408, while the sum is 65.

The spelling of 161788032187724 in words is "one hundred sixty-one trillion, seven hundred eighty-eight billion, thirty-two million, one hundred eighty-seven thousand, seven hundred twenty-four".