257793814783 has 2 divisors, whose sum is σ = 257793814784. Its totient is φ = 257793814782.

The previous prime is 257793814753. The next prime is 257793814843. The reversal of 257793814783 is 387418397752.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257793814783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257793814753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128896907391 + 128896907392.

It is an arithmetic number, because the mean of its divisors is an integer number (128896907392).

Almost surely, 2^257793814783 is an apocalyptic number.

257793814783 is a deficient number, since it is larger than the sum of its proper divisors (1).

257793814783 is an equidigital number, since it uses as much as digits as its factorization.

257793814783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71124480, while the sum is 64.

The spelling of 257793814783 in words is "two hundred fifty-seven billion, seven hundred ninety-three million, eight hundred fourteen thousand, seven hundred eighty-three".