57255660021064 has 8 divisors (see below), whose sum is σ = 107354362539510. Its totient is φ = 28627830010528.

The previous prime is 57255660021059. The next prime is 57255660021107. The reversal of 57255660021064 is 46012006655275.

It can be written as a sum of positive squares in only one way, i.e., 56529977524164 + 725682496900 = 7518642^2 + 851870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 57255660020999 and 57255660021017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3578478751309 + ... + 3578478751324.

Almost surely, 2^{57255660021064} is an apocalyptic number.

It is an amenable number.

57255660021064 is a deficient number, since it is larger than the sum of its proper divisors (50098702518446).

57255660021064 is a wasteful number, since it uses less digits than its factorization.

57255660021064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7156957502639 (or 7156957502635 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 49.

The spelling of 57255660021064 in words is "fifty-seven trillion, two hundred fifty-five billion, six hundred sixty million, twenty-one thousand, sixty-four".