220078731968 has 56 divisors (see below), whose sum is σ = 452906160480. Its totient is φ = 105979596800.

The previous prime is 220078731913. The next prime is 220078732001. The reversal of 220078731968 is 869137870022.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596405 + ... + 892107.

Almost surely, 2^220078731968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220078731968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226453080240).

220078731968 is an abundant number, since it is smaller than the sum of its proper divisors (232827428512).

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

220078731968 is a wasteful number, since it uses less digits than its factorization.

220078731968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296145 (or 296135 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 220078731968 in words is "two hundred twenty billion, seventy-eight million, seven hundred thirty-one thousand, nine hundred sixty-eight".