36921131604 has 36 divisors (see below), whose sum is σ = 106661047584. Its totient is φ = 10548894672.

The previous prime is 36921131579. The next prime is 36921131623. The reversal of 36921131604 is 40613112963.

36921131604 is a `hidden beast` number, since 3 + 6 + 9 + 2 + 11 + 31 + 604 = 666.

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

It is a super-2 number, since 2×36921131604² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73255962 + ... + 73256465.

Almost surely, 2^36921131604 is an apocalyptic number.

It is an amenable number.

36921131604 is an abundant number, since it is smaller than the sum of its proper divisors (69739915980).

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

36921131604 is a wasteful number, since it uses less digits than its factorization.

36921131604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146512444 (or 146512439 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 36921131604 in words is "thirty-six billion, nine hundred twenty-one million, one hundred thirty-one thousand, six hundred four".