20736966256 has 20 divisors (see below), whose sum is σ = 41032721952. Its totient is φ = 10147876736.

The previous prime is 20736966251. The next prime is 20736966281. The reversal of 20736966256 is 65266963702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20736966251) 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, 13787125 + ... + 13788628.

Almost surely, 2^20736966256 is an apocalyptic number.

It is an amenable number.

20736966256 is a deficient number, since it is larger than the sum of its proper divisors (20295755696).

20736966256 is a wasteful number, since it uses less digits than its factorization.

20736966256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27575808 (or 27575802 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 52.

The spelling of 20736966256 in words is "twenty billion, seven hundred thirty-six million, nine hundred sixty-six thousand, two hundred fifty-six".