257092689563 has 2 divisors, whose sum is σ = 257092689564. Its totient is φ = 257092689562.

The previous prime is 257092689559. The next prime is 257092689571. The reversal of 257092689563 is 365986290752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257092689563 - 2² = 257092689559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 257092689496 and 257092689505.

It is not a weakly prime, because it can be changed into another prime (257092689593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128546344781 + 128546344782.

It is an arithmetic number, because the mean of its divisors is an integer number (128546344782).

Almost surely, 2^257092689563 is an apocalyptic number.

257092689563 is a deficient number, since it is larger than the sum of its proper divisors (1).

257092689563 is an equidigital number, since it uses as much as digits as its factorization.

257092689563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48988800, while the sum is 62.

The spelling of 257092689563 in words is "two hundred fifty-seven billion, ninety-two million, six hundred eighty-nine thousand, five hundred sixty-three".