263216705677 has 2 divisors, whose sum is σ = 263216705678. Its totient is φ = 263216705676.

The previous prime is 263216705669. The next prime is 263216705699. The reversal of 263216705677 is 776507612362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183727105956 + 79489599721 = 428634^2 + 281939^2 .

It is a cyclic number.

It is not a de Polignac number, because 263216705677 - 2³ = 263216705669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263216705657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131608352838 + 131608352839.

It is an arithmetic number, because the mean of its divisors is an integer number (131608352839).

Almost surely, 2^263216705677 is an apocalyptic number.

It is an amenable number.

263216705677 is a deficient number, since it is larger than the sum of its proper divisors (1).

263216705677 is an equidigital number, since it uses as much as digits as its factorization.

263216705677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4445280, while the sum is 52.

The spelling of 263216705677 in words is "two hundred sixty-three billion, two hundred sixteen million, seven hundred five thousand, six hundred seventy-seven".