161601600176 has 20 divisors (see below), whose sum is σ = 313136487744. Its totient is φ = 80792184000.

The previous prime is 161601600151. The next prime is 161601600179. The reversal of 161601600176 is 671006106161.

It is a super-2 number, since 2×161601600176² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161601600179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382400 + ... + 685151.

Almost surely, 2^161601600176 is an apocalyptic number.

161601600176 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161601600176 is a deficient number, since it is larger than the sum of its proper divisors (151534887568).

161601600176 is a wasteful number, since it uses less digits than its factorization.

161601600176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077020 (or 1077014 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 161601600176 in words is "one hundred sixty-one billion, six hundred one million, six hundred thousand, one hundred seventy-six".