265550905199 has 2 divisors, whose sum is σ = 265550905200. Its totient is φ = 265550905198.

The previous prime is 265550905181. The next prime is 265550905219. The reversal of 265550905199 is 991509055562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265550905199 - 2⁸ = 265550904943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265550905159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132775452599 + 132775452600.

It is an arithmetic number, because the mean of its divisors is an integer number (132775452600).

Almost surely, 2^265550905199 is an apocalyptic number.

265550905199 is a deficient number, since it is larger than the sum of its proper divisors (1).

265550905199 is an equidigital number, since it uses as much as digits as its factorization.

265550905199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5467500, while the sum is 56.

The spelling of 265550905199 in words is "two hundred sixty-five billion, five hundred fifty million, nine hundred five thousand, one hundred ninety-nine".