20485760764 has 24 divisors (see below), whose sum is σ = 41744572128. Its totient is φ = 8613958080.

The previous prime is 20485760749. The next prime is 20485760809. The reversal of 20485760764 is 46706758402.

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, 6900727 + ... + 6903694.

It is an arithmetic number, because the mean of its divisors is an integer number (1739357172).

Almost surely, 2^20485760764 is an apocalyptic number.

It is an amenable number.

20485760764 is an abundant number, since it is smaller than the sum of its proper divisors (21258811364).

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

20485760764 is a wasteful number, since it uses less digits than its factorization.

20485760764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13804485 (or 13804483 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 20485760764 in words is "twenty billion, four hundred eighty-five million, seven hundred sixty thousand, seven hundred sixty-four".