26492608613 has 4 divisors (see below), whose sum is σ = 27208625100. Its totient is φ = 25776592128.

The previous prime is 26492608579. The next prime is 26492608633. The reversal of 26492608613 is 31680629462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15206095969 + 11286512644 = 123313^2 + 106238^2 .

It is a cyclic number.

It is not a de Polignac number, because 26492608613 - 2⁸ = 26492608357 is a prime.

It is a super-2 number, since 2×26492608613² (a number of 22 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 (26492608633) 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, 358008188 + ... + 358008261.

It is an arithmetic number, because the mean of its divisors is an integer number (6802156275).

Almost surely, 2^26492608613 is an apocalyptic number.

It is an amenable number.

26492608613 is a deficient number, since it is larger than the sum of its proper divisors (716016487).

26492608613 is an equidigital number, since it uses as much as digits as its factorization.

26492608613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716016486.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 26492608613 in words is "twenty-six billion, four hundred ninety-two million, six hundred eight thousand, six hundred thirteen".