161583884976 has 20 divisors (see below), whose sum is σ = 417425036312. Its totient is φ = 53861294976.

The previous prime is 161583884971. The next prime is 161583884989. The reversal of 161583884976 is 679488385161.

It is a happy number.

161583884976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161583884976² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161583884971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1683165421 + ... + 1683165516.

Almost surely, 2^161583884976 is an apocalyptic number.

161583884976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161583884976 is an abundant number, since it is smaller than the sum of its proper divisors (255841151336).

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

161583884976 is a wasteful number, since it uses less digits than its factorization.

161583884976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366330948 (or 3366330942 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 66.

The spelling of 161583884976 in words is "one hundred sixty-one billion, five hundred eighty-three million, eight hundred eighty-four thousand, nine hundred seventy-six".