257714815065 has 16 divisors (see below), whose sum is σ = 434046004800. Its totient is φ = 130213801152.

The previous prime is 257714815021. The next prime is 257714815079. The reversal of 257714815065 is 560518417752.

It is not a de Polignac number, because 257714815065 - 2²⁶ = 257647706201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 257714814999 and 257714815017.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452130970 + ... + 452131539.

It is an arithmetic number, because the mean of its divisors is an integer number (27127875300).

Almost surely, 2^257714815065 is an apocalyptic number.

It is an amenable number.

257714815065 is a deficient number, since it is larger than the sum of its proper divisors (176331189735).

257714815065 is a wasteful number, since it uses less digits than its factorization.

257714815065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904262536.

The product of its (nonzero) digits is 2352000, while the sum is 51.

The spelling of 257714815065 in words is "two hundred fifty-seven billion, seven hundred fourteen million, eight hundred fifteen thousand, sixty-five".