57698403984 has 120 divisors (see below), whose sum is σ = 174657250040. Its totient is φ = 17675698176.

The previous prime is 57698403977. The next prime is 57698404013. The reversal of 57698403984 is 48930489675.

57698403984 is a `hidden beast` number, since 57 + 6 + 98 + 403 + 98 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4917936384 + 52780467600 = 70128^2 + 229740^2 .

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 23 ways as a sum of consecutive naturals, for example, 361392 + ... + 495984.

Almost surely, 2^57698403984 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 57698403984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87328625020).

57698403984 is an abundant number, since it is smaller than the sum of its proper divisors (116958846056).

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

57698403984 is a wasteful number, since it uses less digits than its factorization.

57698403984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134849 (or 134840 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 57698403984 in words is "fifty-seven billion, six hundred ninety-eight million, four hundred three thousand, nine hundred eighty-four".