257537128574764 has 12 divisors (see below), whose sum is σ = 450695719243224. Its totient is φ = 128766923076704.

The previous prime is 257537128574723. The next prime is 257537128574767. The reversal of 257537128574764 is 467475821735752.

It is not an unprimeable number, because it can be changed into a prime (257537128574767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409949569 + ... + 410577304.

It is an arithmetic number, because the mean of its divisors is an integer number (37557976603602).

Almost surely, 2^{257537128574764} is an apocalyptic number.

It is an amenable number.

257537128574764 is a deficient number, since it is larger than the sum of its proper divisors (193158590668460).

257537128574764 is a wasteful number, since it uses less digits than its factorization.

257537128574764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820605344 (or 820605342 counting only the distinct ones).

The product of its digits is 2765952000, while the sum is 73.

The spelling of 257537128574764 in words is "two hundred fifty-seven trillion, five hundred thirty-seven billion, one hundred twenty-eight million, five hundred seventy-four thousand, seven hundred sixty-four".