57221216163 has 6 divisors (see below), whose sum is σ = 82652867804. Its totient is φ = 38147477436.

The previous prime is 57221216161. The next prime is 57221216189. The reversal of 57221216163 is 36161212275.

57221216163 is a `hidden beast` number, since 5 + 7 + 22 + 12 + 1 + 616 + 3 = 666.

It is not a de Polignac number, because 57221216163 - 2¹ = 57221216161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57221216161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3178956445 + ... + 3178956462.

Almost surely, 2^57221216163 is an apocalyptic number.

57221216163 is a deficient number, since it is larger than the sum of its proper divisors (25431651641).

57221216163 is a wasteful number, since it uses less digits than its factorization.

57221216163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6357912913 (or 6357912910 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The spelling of 57221216163 in words is "fifty-seven billion, two hundred twenty-one million, two hundred sixteen thousand, one hundred sixty-three".