57143868894 has 36 divisors (see below), whose sum is σ = 144025875864. Its totient is φ = 16326819432.

The previous prime is 57143868883. The next prime is 57143868907. The reversal of 57143868894 is 49886834175.

57143868894 is a `hidden beast` number, since 57 + 1 + 438 + 68 + 8 + 94 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 32393602 + ... + 32395365.

It is an arithmetic number, because the mean of its divisors is an integer number (4000718774).

Almost surely, 2^57143868894 is an apocalyptic number.

57143868894 is an abundant number, since it is smaller than the sum of its proper divisors (86882006970).

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

57143868894 is a wasteful number, since it uses less digits than its factorization.

57143868894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64788989 (or 64788979 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The spelling of 57143868894 in words is "fifty-seven billion, one hundred forty-three million, eight hundred sixty-eight thousand, eight hundred ninety-four".