57004423920 has 200 divisors, whose sum is σ = 198122118480. Its totient is φ = 15190640640.

The previous prime is 57004423907. The next prime is 57004423963. The reversal of 57004423920 is 2932440075.

57004423920 is a `hidden beast` number, since 570 + 0 + 44 + 23 + 9 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15154840 + ... + 15158600.

Almost surely, 2^57004423920 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 57004423920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99061059240).

57004423920 is an abundant number, since it is smaller than the sum of its proper divisors (141117694560).

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

57004423920 is a wasteful number, since it uses less digits than its factorization.

57004423920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6125 (or 6110 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Adding to 57004423920 its reverse (2932440075), we get a palindrome (59936863995).

The spelling of 57004423920 in words is "fifty-seven billion, four million, four hundred twenty-three thousand, nine hundred twenty".