57221818211672 has 16 divisors (see below), whose sum is σ = 107291020912560. Its totient is φ = 28610879301664.

The previous prime is 57221818211573. The next prime is 57221818211717. The reversal of 57221818211672 is 27611281812275.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5895773 + ... + 12214899.

It is an arithmetic number, because the mean of its divisors is an integer number (6705688807035).

Almost surely, 2^{57221818211672} is an apocalyptic number.

It is an amenable number.

57221818211672 is a deficient number, since it is larger than the sum of its proper divisors (50069202700888).

57221818211672 is a wasteful number, since it uses less digits than its factorization.

57221818211672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7451050 (or 7451046 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 53.

The spelling of 57221818211672 in words is "fifty-seven trillion, two hundred twenty-one billion, eight hundred eighteen million, two hundred eleven thousand, six hundred seventy-two".