21164080604 has 6 divisors (see below), whose sum is σ = 37037141064. Its totient is φ = 10582040300.

The previous prime is 21164080583. The next prime is 21164080627. The reversal of 21164080604 is 40608046112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2645510072 + ... + 2645510079.

It is an arithmetic number, because the mean of its divisors is an integer number (6172856844).

Almost surely, 2^21164080604 is an apocalyptic number.

It is an amenable number.

21164080604 is a deficient number, since it is larger than the sum of its proper divisors (15873060460).

21164080604 is a wasteful number, since it uses less digits than its factorization.

21164080604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291020155 (or 5291020153 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 21164080604 in words is "twenty-one billion, one hundred sixty-four million, eighty thousand, six hundred four".