21592594792 has 8 divisors (see below), whose sum is σ = 40486115250. Its totient is φ = 10796297392.

The previous prime is 21592594747. The next prime is 21592594811. The reversal of 21592594792 is 29749529512.

It can be written as a sum of positive squares in only one way, i.e., 14446597636 + 7145997156 = 120194^2 + 84534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1349537167 + ... + 1349537182.

Almost surely, 2^21592594792 is an apocalyptic number.

It is an amenable number.

21592594792 is a deficient number, since it is larger than the sum of its proper divisors (18893520458).

21592594792 is a wasteful number, since it uses less digits than its factorization.

21592594792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699074355 (or 2699074351 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 55.

The spelling of 21592594792 in words is "twenty-one billion, five hundred ninety-two million, five hundred ninety-four thousand, seven hundred ninety-two".