265663976911 has 2 divisors, whose sum is σ = 265663976912. Its totient is φ = 265663976910.

The previous prime is 265663976891. The next prime is 265663976959. The reversal of 265663976911 is 119679366562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265663976911 - 2⁷ = 265663976783 is a prime.

It is a super-2 number, since 2×265663976911² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 265663976911.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265663076911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132831988455 + 132831988456.

It is an arithmetic number, because the mean of its divisors is an integer number (132831988456).

Almost surely, 2^265663976911 is an apocalyptic number.

265663976911 is a deficient number, since it is larger than the sum of its proper divisors (1).

265663976911 is an equidigital number, since it uses as much as digits as its factorization.

265663976911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22044960, while the sum is 61.

The spelling of 265663976911 in words is "two hundred sixty-five billion, six hundred sixty-three million, nine hundred seventy-six thousand, nine hundred eleven".