57985521804 has 108 divisors (see below), whose sum is σ = 170875714464. Its totient is φ = 16531276608.

The previous prime is 57985521791. The next prime is 57985521859. The reversal of 57985521804 is 40812558975.

57985521804 is a `hidden beast` number, since 5 + 7 + 9 + 8 + 552 + 1 + 80 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 781234 + ... + 852230.

Almost surely, 2^57985521804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57985521804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85437857232).

57985521804 is an abundant number, since it is smaller than the sum of its proper divisors (112890192660).

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

57985521804 is a wasteful number, since it uses less digits than its factorization.

57985521804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71484 (or 71472 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 54.

The spelling of 57985521804 in words is "fifty-seven billion, nine hundred eighty-five million, five hundred twenty-one thousand, eight hundred four".