26687796495 has 16 divisors (see below), whose sum is σ = 42704656512. Its totient is φ = 14232097440.

The previous prime is 26687796481. The next prime is 26687796497. The reversal of 26687796495 is 59469778662.

It is a Cunningham number, because it is equal to 163364²-1.

It is not a de Polignac number, because 26687796495 - 2¹⁹ = 26687272207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26687796497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81684 + ... + 245046.

It is an arithmetic number, because the mean of its divisors is an integer number (2669041032).

Almost surely, 2^26687796495 is an apocalyptic number.

26687796495 is a deficient number, since it is larger than the sum of its proper divisors (16016860017).

26687796495 is a wasteful number, since it uses less digits than its factorization.

26687796495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174262.

The product of its digits is 274337280, while the sum is 69.

The spelling of 26687796495 in words is "twenty-six billion, six hundred eighty-seven million, seven hundred ninety-six thousand, four hundred ninety-five".