263774657983 has 2 divisors, whose sum is σ = 263774657984. Its totient is φ = 263774657982.

The previous prime is 263774657929. The next prime is 263774657989. The reversal of 263774657983 is 389756477362.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263774657983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263774657989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131887328991 + 131887328992.

It is an arithmetic number, because the mean of its divisors is an integer number (131887328992).

Almost surely, 2^263774657983 is an apocalyptic number.

263774657983 is a deficient number, since it is larger than the sum of its proper divisors (1).

263774657983 is an equidigital number, since it uses as much as digits as its factorization.

263774657983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320060160, while the sum is 67.

The spelling of 263774657983 in words is "two hundred sixty-three billion, seven hundred seventy-four million, six hundred fifty-seven thousand, nine hundred eighty-three".