57315109831520 has 24 divisors (see below), whose sum is σ = 135406946977344. Its totient is φ = 22926043932544.

The previous prime is 57315109831493. The next prime is 57315109831561. The reversal of 57315109831520 is 2513890151375.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179109718064 + ... + 179109718383.

It is an arithmetic number, because the mean of its divisors is an integer number (5641956124056).

Almost surely, 2^{57315109831520} is an apocalyptic number.

It is an amenable number.

57315109831520 is an abundant number, since it is smaller than the sum of its proper divisors (78091837145824).

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

57315109831520 is a wasteful number, since it uses less digits than its factorization.

57315109831520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358219436462 (or 358219436454 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 50.

Adding to 57315109831520 its reverse (2513890151375), we get a palindrome (59828999982895).

The spelling of 57315109831520 in words is "fifty-seven trillion, three hundred fifteen billion, one hundred nine million, eight hundred thirty-one thousand, five hundred twenty".