20664583510 has 16 divisors (see below), whose sum is σ = 37198271376. Its totient is φ = 8265384288.

The previous prime is 20664583463. The next prime is 20664583523. The reversal of 20664583510 is 1538546602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187429 + ... + 276511.

It is an arithmetic number, because the mean of its divisors is an integer number (2324891961).

Almost surely, 2^20664583510 is an apocalyptic number.

20664583510 is a deficient number, since it is larger than the sum of its proper divisors (16533687866).

20664583510 is a wasteful number, since it uses less digits than its factorization.

20664583510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112287.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 20664583510 in words is "twenty billion, six hundred sixty-four million, five hundred eighty-three thousand, five hundred ten".