20764566730 has 32 divisors (see below), whose sum is σ = 37545056640. Its totient is φ = 8268384960.

The previous prime is 20764566707. The next prime is 20764566793. The reversal of 20764566730 is 3766546702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2402056 + ... + 2410684.

It is an arithmetic number, because the mean of its divisors is an integer number (1173283020).

Almost surely, 2^20764566730 is an apocalyptic number.

20764566730 is a deficient number, since it is larger than the sum of its proper divisors (16780489910).

20764566730 is a wasteful number, since it uses less digits than its factorization.

20764566730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9694.

The product of its (nonzero) digits is 1270080, while the sum is 46.

The spelling of 20764566730 in words is "twenty billion, seven hundred sixty-four million, five hundred sixty-six thousand, seven hundred thirty".