20804923674 has 48 divisors (see below), whose sum is σ = 45929467584. Its totient is φ = 6804806400.

The previous prime is 20804923661. The next prime is 20804923679. The reversal of 20804923674 is 47632940802.

20804923674 is a `hidden beast` number, since 20 + 80 + 492 + 3 + 67 + 4 = 666.

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, 231082 + ... + 308234.

It is an arithmetic number, because the mean of its divisors is an integer number (956863908).

Almost surely, 2^20804923674 is an apocalyptic number.

20804923674 is an abundant number, since it is smaller than the sum of its proper divisors (25124543910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20804923674 is a wasteful number, since it uses less digits than its factorization.

20804923674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77443 (or 77440 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 20804923674 in words is "twenty billion, eight hundred four million, nine hundred twenty-three thousand, six hundred seventy-four".