57447411840 has 1536 divisors, whose sum is σ = 270755654400. Its totient is φ = 11370627072.

The previous prime is 57447411809. The next prime is 57447411863. The reversal of 57447411840 is 4811474475.

57447411840 is a `hidden beast` number, since 57 + 447 + 4 + 118 + 40 = 666.

It is a super-2 number, since 2×57447411840² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 187124967 + ... + 187125273.

Almost surely, 2^57447411840 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 57447411840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135377827200).

57447411840 is an abundant number, since it is smaller than the sum of its proper divisors (213308242560).

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

57447411840 is a wasteful number, since it uses less digits than its factorization.

57447411840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The spelling of 57447411840 in words is "fifty-seven billion, four hundred forty-seven million, four hundred eleven thousand, eight hundred forty".