265893838091 has 6 divisors (see below), whose sum is σ = 309305077020. Its totient is φ = 227909004036.

The previous prime is 265893838079. The next prime is 265893838097. The reversal of 265893838091 is 190838398562.

It is not a de Polignac number, because 265893838091 - 2²⁶ = 265826729227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265893838097) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2713202381 + ... + 2713202478.

It is an arithmetic number, because the mean of its divisors is an integer number (51550846170).

Almost surely, 2^265893838091 is an apocalyptic number.

265893838091 is a deficient number, since it is larger than the sum of its proper divisors (43411238929).

265893838091 is an equidigital number, since it uses as much as digits as its factorization.

265893838091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5426404873 (or 5426404866 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 62.

The spelling of 265893838091 in words is "two hundred sixty-five billion, eight hundred ninety-three million, eight hundred thirty-eight thousand, ninety-one".