257749976963 has 2 divisors, whose sum is σ = 257749976964. Its totient is φ = 257749976962.

The previous prime is 257749976863. The next prime is 257749976969. The reversal of 257749976963 is 369679947752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257749976963 - 2¹² = 257749972867 is a prime.

It is not a weakly prime, because it can be changed into another prime (257749976969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128874988481 + 128874988482.

It is an arithmetic number, because the mean of its divisors is an integer number (128874988482).

Almost surely, 2^257749976963 is an apocalyptic number.

257749976963 is a deficient number, since it is larger than the sum of its proper divisors (1).

257749976963 is an equidigital number, since it uses as much as digits as its factorization.

257749976963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080203040, while the sum is 74.

The spelling of 257749976963 in words is "two hundred fifty-seven billion, seven hundred forty-nine million, nine hundred seventy-six thousand, nine hundred sixty-three".