26494796565 has 24 divisors (see below), whose sum is σ = 48625745688. Its totient is φ = 13299348480.

The previous prime is 26494796543. The next prime is 26494796569. The reversal of 26494796565 is 56569749462.

26494796565 is a `hidden beast` number, since 2 + 6 + 49 + 479 + 65 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2126962161 + 24367834404 = 46119^2 + 156102^2 .

It is not a de Polignac number, because 26494796565 - 2¹¹ = 26494794517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26494796569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17316096 + ... + 17317625.

It is an arithmetic number, because the mean of its divisors is an integer number (2026072737).

Almost surely, 2^26494796565 is an apocalyptic number.

It is an amenable number.

26494796565 is a deficient number, since it is larger than the sum of its proper divisors (22130949123).

26494796565 is a wasteful number, since it uses less digits than its factorization.

26494796565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34633749 (or 34633746 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 63.

The spelling of 26494796565 in words is "twenty-six billion, four hundred ninety-four million, seven hundred ninety-six thousand, five hundred sixty-five".