257092689631 has 2 divisors, whose sum is σ = 257092689632. Its totient is φ = 257092689630.

The previous prime is 257092689593. The next prime is 257092689671. The reversal of 257092689631 is 136986290752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257092689631 - 2¹⁷ = 257092558559 is a prime.

It is a super-2 number, since 2×257092689631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257092689671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128546344815 + 128546344816.

It is an arithmetic number, because the mean of its divisors is an integer number (128546344816).

Almost surely, 2^257092689631 is an apocalyptic number.

257092689631 is a deficient number, since it is larger than the sum of its proper divisors (1).

257092689631 is an equidigital number, since it uses as much as digits as its factorization.

257092689631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 257092689631 in words is "two hundred fifty-seven billion, ninety-two million, six hundred eighty-nine thousand, six hundred thirty-one".