20866924023 has 32 divisors (see below), whose sum is σ = 32161888512. Its totient is φ = 11893593600.

The previous prime is 20866924019. The next prime is 20866924033. The reversal of 20866924023 is 32042966802.

It is not a de Polignac number, because 20866924023 - 2² = 20866924019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20866924033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 756708 + ... + 783798.

It is an arithmetic number, because the mean of its divisors is an integer number (1005059016).

Almost surely, 2^20866924023 is an apocalyptic number.

20866924023 is a deficient number, since it is larger than the sum of its proper divisors (11294964489).

20866924023 is a wasteful number, since it uses less digits than its factorization.

20866924023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28495.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 20866924023 in words is "twenty billion, eight hundred sixty-six million, nine hundred twenty-four thousand, twenty-three".