265555136291 has 2 divisors, whose sum is σ = 265555136292. Its totient is φ = 265555136290.

The previous prime is 265555136251. The next prime is 265555136317. The reversal of 265555136291 is 192631555562.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265555136291 is a prime.

It is not a weakly prime, because it can be changed into another prime (265555136251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132777568145 + 132777568146.

It is an arithmetic number, because the mean of its divisors is an integer number (132777568146).

Almost surely, 2^265555136291 is an apocalyptic number.

265555136291 is a deficient number, since it is larger than the sum of its proper divisors (1).

265555136291 is an equidigital number, since it uses as much as digits as its factorization.

265555136291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430000, while the sum is 50.

The spelling of 265555136291 in words is "two hundred sixty-five billion, five hundred fifty-five million, one hundred thirty-six thousand, two hundred ninety-one".