220455656616 has 64 divisors (see below), whose sum is σ = 599653454400. Its totient is φ = 67133196288.

The previous prime is 220455656591. The next prime is 220455656647. The reversal of 220455656616 is 616656554022.

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, 3611946 + ... + 3672473.

It is an arithmetic number, because the mean of its divisors is an integer number (9369585225).

Almost surely, 2^220455656616 is an apocalyptic number.

220455656616 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

220455656616 is an abundant number, since it is smaller than the sum of its proper divisors (379197797784).

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

220455656616 is a wasteful number, since it uses less digits than its factorization.

220455656616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7284538 (or 7284534 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 220455656616 in words is "two hundred twenty billion, four hundred fifty-five million, six hundred fifty-six thousand, six hundred sixteen".