221659060868 has 24 divisors (see below), whose sum is σ = 458604955200. Its totient is φ = 91720990368.

The previous prime is 221659060853. The next prime is 221659060933. The reversal of 221659060868 is 868060956122.

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, 136488758 + ... + 136490381.

It is an arithmetic number, because the mean of its divisors is an integer number (19108539800).

Almost surely, 2^221659060868 is an apocalyptic number.

221659060868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

221659060868 is an abundant number, since it is smaller than the sum of its proper divisors (236945894332).

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

221659060868 is a wasteful number, since it uses less digits than its factorization.

221659060868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272979179 (or 272979177 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 221659060868 in words is "two hundred twenty-one billion, six hundred fifty-nine million, sixty thousand, eight hundred sixty-eight".