57221278632 has 128 divisors (see below), whose sum is σ = 181714195200. Its totient is φ = 16343596800.

The previous prime is 57221278627. The next prime is 57221278691. The reversal of 57221278632 is 23687212275.

57221278632 is a `hidden beast` number, since 5 + 7 + 2 + 2 + 1 + 2 + 7 + 8 + 632 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8435082 + ... + 8441862.

It is an arithmetic number, because the mean of its divisors is an integer number (1419642150).

Almost surely, 2^57221278632 is an apocalyptic number.

It is an amenable number.

57221278632 is an abundant number, since it is smaller than the sum of its proper divisors (124492916568).

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

57221278632 is a wasteful number, since it uses less digits than its factorization.

57221278632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12384 (or 12374 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The spelling of 57221278632 in words is "fifty-seven billion, two hundred twenty-one million, two hundred seventy-eight thousand, six hundred thirty-two".