220972758651 has 12 divisors (see below), whose sum is σ = 319216690728. Its totient is φ = 147299564544.

The previous prime is 220972758637. The next prime is 220972758653. The reversal of 220972758651 is 156857279022.

220972758651 is a `hidden beast` number, since 2 + 2 + 0 + 9 + 7 + 2 + 7 + 586 + 51 = 666.

It is not a de Polignac number, because 220972758651 - 2²² = 220968564347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220972758653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1210665 + ... + 1381178.

It is an arithmetic number, because the mean of its divisors is an integer number (26601390894).

Almost surely, 2^220972758651 is an apocalyptic number.

220972758651 is a deficient number, since it is larger than the sum of its proper divisors (98243932077).

220972758651 is a wasteful number, since it uses less digits than its factorization.

220972758651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601322 (or 2601319 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 220972758651 in words is "two hundred twenty billion, nine hundred seventy-two million, seven hundred fifty-eight thousand, six hundred fifty-one".