257057512424242 has 16 divisors (see below), whose sum is σ = 385629974172000. Its totient is φ = 128514188557440.

The previous prime is 257057512424233. The next prime is 257057512424291. The reversal of 257057512424242 is 242424215750752.

It is a self number, because there is not a number n which added to its sum of digits gives 257057512424242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655063009 + ... + 655455307.

It is an arithmetic number, because the mean of its divisors is an integer number (24101873385750).

Almost surely, 2^{257057512424242} is an apocalyptic number.

257057512424242 is a deficient number, since it is larger than the sum of its proper divisors (128572461747758).

257057512424242 is a wasteful number, since it uses less digits than its factorization.

257057512424242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428601.

The product of its (nonzero) digits is 12544000, while the sum is 52.

The spelling of 257057512424242 in words is "two hundred fifty-seven trillion, fifty-seven billion, five hundred twelve million, four hundred twenty-four thousand, two hundred forty-two".