20583924664 has 32 divisors (see below), whose sum is σ = 40643038800. Its totient is φ = 9746231040.

The previous prime is 20583924659. The next prime is 20583924667. The reversal of 20583924664 is 46642938502.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20583924667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356334 + ... + 410050.

Almost surely, 2^20583924664 is an apocalyptic number.

It is an amenable number.

20583924664 is a deficient number, since it is larger than the sum of its proper divisors (20059114136).

20583924664 is a wasteful number, since it uses less digits than its factorization.

20583924664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56263 (or 56259 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 20583924664 in words is "twenty billion, five hundred eighty-three million, nine hundred twenty-four thousand, six hundred sixty-four".