57515315442 has 16 divisors (see below), whose sum is σ = 123879141120. Its totient is φ = 17697020112.

The previous prime is 57515315441. The next prime is 57515315449. The reversal of 57515315442 is 24451351575.

It is a junction number, because it is equal to n+sod(n) for n = 57515315394 and 57515315403.

It is not an unprimeable number, because it can be changed into a prime (57515315441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368687842 + ... + 368687997.

It is an arithmetic number, because the mean of its divisors is an integer number (7742446320).

Almost surely, 2^57515315442 is an apocalyptic number.

57515315442 is an abundant number, since it is smaller than the sum of its proper divisors (66363825678).

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

57515315442 is a wasteful number, since it uses less digits than its factorization.

57515315442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737375857.

The product of its digits is 420000, while the sum is 42.

The spelling of 57515315442 in words is "fifty-seven billion, five hundred fifteen million, three hundred fifteen thousand, four hundred forty-two".