57666464240 has 160 divisors (see below), whose sum is σ = 168225375744. Its totient is φ = 17859179520.

The previous prime is 57666464171. The next prime is 57666464249. The reversal of 57666464240 is 4246466675.

57666464240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57666464249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 937307 + ... + 996933.

Almost surely, 2^57666464240 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 57666464240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84112687872).

57666464240 is an abundant number, since it is smaller than the sum of its proper divisors (110558911504).

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

57666464240 is a wasteful number, since it uses less digits than its factorization.

57666464240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59815 (or 59809 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 50.

The spelling of 57666464240 in words is "fifty-seven billion, six hundred sixty-six million, four hundred sixty-four thousand, two hundred forty".