20802074680 has 32 divisors (see below), whose sum is σ = 48418624800. Its totient is φ = 8033904256.

The previous prime is 20802074669. The next prime is 20802074693. The reversal of 20802074680 is 8647020802.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8965252 + ... + 8967571.

It is an arithmetic number, because the mean of its divisors is an integer number (1513082025).

Almost surely, 2^20802074680 is an apocalyptic number.

20802074680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20802074680 is an abundant number, since it is smaller than the sum of its proper divisors (27616550120).

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

20802074680 is a wasteful number, since it uses less digits than its factorization.

20802074680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17932863 (or 17932859 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 20802074680 in words is "twenty billion, eight hundred two million, seventy-four thousand, six hundred eighty".