57129817742442 has 80 divisors (see below), whose sum is σ = 128302861591872. Its totient is φ = 19000175365440.

The previous prime is 57129817742441. The next prime is 57129817742477. The reversal of 57129817742442 is 24424771892175.

It is a happy number.

57129817742442 is a `hidden beast` number, since 5 + 7 + 1 + 2 + 9 + 81 + 77 + 42 + 442 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 57129817742442.

It is not an unprimeable number, because it can be changed into a prime (57129817742441) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1534780243 + ... + 1534817465.

Almost surely, 2^{57129817742442} is an apocalyptic number.

57129817742442 is an abundant number, since it is smaller than the sum of its proper divisors (71173043849430).

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

57129817742442 is a wasteful number, since it uses less digits than its factorization.

57129817742442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58425 (or 58416 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 63.

The spelling of 57129817742442 in words is "fifty-seven trillion, one hundred twenty-nine billion, eight hundred seventeen million, seven hundred forty-two thousand, four hundred forty-two".