265979791199 has 2 divisors, whose sum is σ = 265979791200. Its totient is φ = 265979791198.

The previous prime is 265979791157. The next prime is 265979791211. The reversal of 265979791199 is 991197979562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265979791199 - 2⁸ = 265979790943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265979791699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132989895599 + 132989895600.

It is an arithmetic number, because the mean of its divisors is an integer number (132989895600).

Almost surely, 2^265979791199 is an apocalyptic number.

265979791199 is a deficient number, since it is larger than the sum of its proper divisors (1).

265979791199 is an equidigital number, since it uses as much as digits as its factorization.

265979791199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 173604060, while the sum is 74.

The spelling of 265979791199 in words is "two hundred sixty-five billion, nine hundred seventy-nine million, seven hundred ninety-one thousand, one hundred ninety-nine".