20862004872 has 64 divisors (see below), whose sum is σ = 53392711680. Its totient is φ = 6789125952.

The previous prime is 20862004843. The next prime is 20862004879. The reversal of 20862004872 is 27840026802.

It is a self number, because there is not a number n which added to its sum of digits gives 20862004872.

It is not an unprimeable number, because it can be changed into a prime (20862004879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3446953 + ... + 3452999.

It is an arithmetic number, because the mean of its divisors is an integer number (834261120).

Almost surely, 2^20862004872 is an apocalyptic number.

It is an amenable number.

20862004872 is an abundant number, since it is smaller than the sum of its proper divisors (32530706808).

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

20862004872 is a wasteful number, since it uses less digits than its factorization.

20862004872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9442 (or 9438 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The spelling of 20862004872 in words is "twenty billion, eight hundred sixty-two million, four thousand, eight hundred seventy-two".