57222091808 has 90 divisors (see below), whose sum is σ = 131576636079. Its totient is φ = 24495336768.

The previous prime is 57222091789. The next prime is 57222091811. The reversal of 57222091808 is 80819022275.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 28611045904 + 28611045904 = 169148^2 + 169148^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=169148.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 66305585 + ... + 66306447.

Almost surely, 2^57222091808 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 57222091808

57222091808 is an abundant number, since it is smaller than the sum of its proper divisors (74354544271).

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

57222091808 is an frugal number, since it uses more digits than its factorization.

57222091808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764 (or 872 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 57222091808 in words is "fifty-seven billion, two hundred twenty-two million, ninety-one thousand, eight hundred eight".