257147634057 has 16 divisors (see below), whose sum is σ = 362995152960. Its totient is φ = 161470245312.

The previous prime is 257147634047. The next prime is 257147634083. The reversal of 257147634057 is 750436741752.

It is not a de Polignac number, because 257147634057 - 2⁶ = 257147633993 is a prime.

It is a super-2 number, since 2×257147634057² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257147634047) 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, 13028758 + ... + 13048479.

It is an arithmetic number, because the mean of its divisors is an integer number (22687197060).

Almost surely, 2^257147634057 is an apocalyptic number.

It is an amenable number.

257147634057 is a deficient number, since it is larger than the sum of its proper divisors (105847518903).

257147634057 is a wasteful number, since it uses less digits than its factorization.

257147634057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26077432.

The product of its (nonzero) digits is 4939200, while the sum is 51.

The spelling of 257147634057 in words is "two hundred fifty-seven billion, one hundred forty-seven million, six hundred thirty-four thousand, fifty-seven".