57204121556 has 12 divisors (see below), whose sum is σ = 100121191968. Its totient is φ = 28598066712.

The previous prime is 57204121549. The next prime is 57204121561. The reversal of 57204121556 is 65512140275.

It is a super-2 number, since 2×57204121556² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 966176 + ... + 1023671.

It is an arithmetic number, because the mean of its divisors is an integer number (8343432664).

Almost surely, 2^57204121556 is an apocalyptic number.

It is an amenable number.

57204121556 is a deficient number, since it is larger than the sum of its proper divisors (42917070412).

57204121556 is a wasteful number, since it uses less digits than its factorization.

57204121556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997038 (or 1997036 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 38.

The spelling of 57204121556 in words is "fifty-seven billion, two hundred four million, one hundred twenty-one thousand, five hundred fifty-six".