20804923675 has 24 divisors (see below), whose sum is σ = 26286688080. Its totient is φ = 16329830400.

The previous prime is 20804923661. The next prime is 20804923679. The reversal of 20804923675 is 57632940802.

It is not a de Polignac number, because 20804923675 - 2¹⁵ = 20804890907 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20804923679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 754939 + ... + 782011.

It is an arithmetic number, because the mean of its divisors is an integer number (1095278670).

Almost surely, 2^20804923675 is an apocalyptic number.

20804923675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20804923675 is a deficient number, since it is larger than the sum of its proper divisors (5481764405).

20804923675 is a wasteful number, since it uses less digits than its factorization.

20804923675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27663 (or 27658 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 20804923675 in words is "twenty billion, eight hundred four million, nine hundred twenty-three thousand, six hundred seventy-five".