57221010066 has 32 divisors (see below), whose sum is σ = 124855584768. Its totient is φ = 17338346640.

The previous prime is 57221010043. The next prime is 57221010083. The reversal of 57221010066 is 66001012275.

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, 1107771 + ... + 1158273.

It is an arithmetic number, because the mean of its divisors is an integer number (3901737024).

Almost surely, 2^57221010066 is an apocalyptic number.

57221010066 is an abundant number, since it is smaller than the sum of its proper divisors (67634574702).

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

57221010066 is a wasteful number, since it uses less digits than its factorization.

57221010066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67686.

The product of its (nonzero) digits is 5040, while the sum is 30.

The spelling of 57221010066 in words is "fifty-seven billion, two hundred twenty-one million, ten thousand, sixty-six".