20502765004 has 12 divisors (see below), whose sum is σ = 35914579624. Its totient is φ = 10241456544.

The previous prime is 20502764993. The next prime is 20502765007. The reversal of 20502765004 is 40056720502.

It is not an unprimeable number, because it can be changed into a prime (20502765007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2476842 + ... + 2485105.

Almost surely, 2^20502765004 is an apocalyptic number.

It is an amenable number.

20502765004 is a deficient number, since it is larger than the sum of its proper divisors (15411814620).

20502765004 is a wasteful number, since it uses less digits than its factorization.

20502765004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4962984 (or 4962982 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The spelling of 20502765004 in words is "twenty billion, five hundred two million, seven hundred sixty-five thousand, four".