57221445843 has 28 divisors (see below), whose sum is σ = 85821267000. Its totient is φ = 38135028096.

The previous prime is 57221445811. The next prime is 57221445863. The reversal of 57221445843 is 34854412275.

57221445843 is a `hidden beast` number, since 5 + 7 + 2 + 21 + 44 + 584 + 3 = 666.

It is not a de Polignac number, because 57221445843 - 2⁵ = 57221445811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57221445863) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2539555 + ... + 2561987.

It is an arithmetic number, because the mean of its divisors is an integer number (3065045250).

Almost surely, 2^57221445843 is an apocalyptic number.

57221445843 is a deficient number, since it is larger than the sum of its proper divisors (28599821157).

57221445843 is an equidigital number, since it uses as much as digits as its factorization.

57221445843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25950 (or 25935 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 45.

The spelling of 57221445843 in words is "fifty-seven billion, two hundred twenty-one million, four hundred forty-five thousand, eight hundred forty-three".