57513620940 has 96 divisors (see below), whose sum is σ = 162979568640. Its totient is φ = 15152349696.

The previous prime is 57513620917. The next prime is 57513620947. The reversal of 57513620940 is 4902631575.

It is a junction number, because it is equal to n+sod(n) for n = 57513620892 and 57513620901.

It is not an unprimeable number, because it can be changed into a prime (57513620947) 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, 7936959 + ... + 7944201.

It is an arithmetic number, because the mean of its divisors is an integer number (1697703840).

Almost surely, 2^57513620940 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 57513620940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81489784320).

57513620940 is an abundant number, since it is smaller than the sum of its proper divisors (105465947700).

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

57513620940 is a wasteful number, since it uses less digits than its factorization.

57513620940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8831 (or 8829 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 57513620940 in words is "fifty-seven billion, five hundred thirteen million, six hundred twenty thousand, nine hundred forty".