257551494783 has 64 divisors (see below), whose sum is σ = 390738816000. Its totient is φ = 149469788160.

The previous prime is 257551494757. The next prime is 257551494829. The reversal of 257551494783 is 387494155752.

It is not a de Polignac number, because 257551494783 - 2⁶ = 257551494719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257551494743) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64177285 + ... + 64181297.

It is an arithmetic number, because the mean of its divisors is an integer number (6105294000).

Almost surely, 2^257551494783 is an apocalyptic number.

257551494783 is a deficient number, since it is larger than the sum of its proper divisors (133187321217).

257551494783 is a wasteful number, since it uses less digits than its factorization.

257551494783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592.

The product of its digits is 42336000, while the sum is 60.

The spelling of 257551494783 in words is "two hundred fifty-seven billion, five hundred fifty-one million, four hundred ninety-four thousand, seven hundred eighty-three".