26115340717717 has 4 divisors (see below), whose sum is σ = 26115350947936. Its totient is φ = 26115330487500.

The previous prime is 26115340717703. The next prime is 26115340717751. The reversal of 26115340717717 is 71771704351162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 26115340717717 - 2¹⁵ = 26115340684949 is a prime.

It is a super-2 number, since 2×26115340717717² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26115340717777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2225518 + ... + 7561984.

It is an arithmetic number, because the mean of its divisors is an integer number (6528837736984).

Almost surely, 2^{26115340717717} is an apocalyptic number.

It is an amenable number.

26115340717717 is a deficient number, since it is larger than the sum of its proper divisors (10230219).

26115340717717 is an equidigital number, since it uses as much as digits as its factorization.

26115340717717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10230218.

The product of its (nonzero) digits is 1728720, while the sum is 52.

The spelling of 26115340717717 in words is "twenty-six trillion, one hundred fifteen billion, three hundred forty million, seven hundred seventeen thousand, seven hundred seventeen".