26265064591 has 2 divisors, whose sum is σ = 26265064592. Its totient is φ = 26265064590.

The previous prime is 26265064559. The next prime is 26265064699. The reversal of 26265064591 is 19546056262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26265064591 - 2⁵ = 26265064559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26265064391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13132532295 + 13132532296.

It is an arithmetic number, because the mean of its divisors is an integer number (13132532296).

Almost surely, 2^26265064591 is an apocalyptic number.

26265064591 is a deficient number, since it is larger than the sum of its proper divisors (1).

26265064591 is an equidigital number, since it uses as much as digits as its factorization.

26265064591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 26265064591 in words is "twenty-six billion, two hundred sixty-five million, sixty-four thousand, five hundred ninety-one".