16180576164 has 36 divisors (see below), whose sum is σ = 41002934700. Its totient is φ = 5380070400.

The previous prime is 16180576163. The next prime is 16180576211. The reversal of 16180576164 is 46167508161.

16180576164 is a `hidden beast` number, since 1 + 6 + 18 + 0 + 576 + 1 + 64 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15997190400 + 183385764 = 126480^2 + 13542^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×16180576164² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16180576163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 545989 + ... + 574860.

Almost surely, 2^16180576164 is an apocalyptic number.

It is an amenable number.

16180576164 is an abundant number, since it is smaller than the sum of its proper divisors (24822358536).

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

16180576164 is a wasteful number, since it uses less digits than its factorization.

16180576164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121260 (or 1121255 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 16180576164 in words is "sixteen billion, one hundred eighty million, five hundred seventy-six thousand, one hundred sixty-four".