257697054719 has 16 divisors (see below), whose sum is σ = 279116589024. Its totient is φ = 236508595200.

The previous prime is 257697054707. The next prime is 257697054721. The reversal of 257697054719 is 917450796752.

It is a cyclic number.

It is not a de Polignac number, because 257697054719 - 2²⁰ = 257696006143 is a prime.

It is a super-2 number, since 2×257697054719² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257697054919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2031479 + ... + 2154599.

It is an arithmetic number, because the mean of its divisors is an integer number (17444786814).

Almost surely, 2^257697054719 is an apocalyptic number.

257697054719 is a deficient number, since it is larger than the sum of its proper divisors (21419534305).

257697054719 is a wasteful number, since it uses less digits than its factorization.

257697054719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124058.

The product of its (nonzero) digits is 33339600, while the sum is 62.

The spelling of 257697054719 in words is "two hundred fifty-seven billion, six hundred ninety-seven million, fifty-four thousand, seven hundred nineteen".