220260646656 has 72 divisors (see below), whose sum is σ = 651349502160. Its totient is φ = 73420213248.

The previous prime is 220260646651. The next prime is 220260646721. The reversal of 220260646656 is 656646062022.

220260646656 is a `hidden beast` number, since 220 + 260 + 64 + 66 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220260646651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15926295 + ... + 15940118.

Almost surely, 2^220260646656 is an apocalyptic number.

It is an amenable number.

220260646656 is an abundant number, since it is smaller than the sum of its proper divisors (431088855504).

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

220260646656 is an equidigital number, since it uses as much as digits as its factorization.

220260646656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31866438 (or 31866418 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 220260646656 in words is "two hundred twenty billion, two hundred sixty million, six hundred forty-six thousand, six hundred fifty-six".