57326480640 has 1728 divisors, whose sum is σ = 260346078720. Its totient is φ = 11418992640.

The previous prime is 57326480639. The next prime is 57326480647. The reversal of 57326480640 is 4608462375.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57326480647) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 644117716 + ... + 644117804.

It is an arithmetic number, because the mean of its divisors is an integer number (150663240).

Almost surely, 2^57326480640 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 57326480640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130173039360).

57326480640 is an abundant number, since it is smaller than the sum of its proper divisors (203019598080).

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

57326480640 is a wasteful number, since it uses less digits than its factorization.

57326480640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 57326480640 in words is "fifty-seven billion, three hundred twenty-six million, four hundred eighty thousand, six hundred forty".