257092689671 has 2 divisors, whose sum is σ = 257092689672. Its totient is φ = 257092689670.

The previous prime is 257092689631. The next prime is 257092689709. The reversal of 257092689671 is 176986290752.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257092689671 is a prime.

It is a super-2 number, since 2×257092689671² (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 (257092689631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128546344835 + 128546344836.

It is an arithmetic number, because the mean of its divisors is an integer number (128546344836).

Almost surely, 2^257092689671 is an apocalyptic number.

257092689671 is a deficient number, since it is larger than the sum of its proper divisors (1).

257092689671 is an equidigital number, since it uses as much as digits as its factorization.

257092689671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 257092689671 in words is "two hundred fifty-seven billion, ninety-two million, six hundred eighty-nine thousand, six hundred seventy-one".