26806798791485 has 4 divisors (see below), whose sum is σ = 32168158549788. Its totient is φ = 21445439033184.

The previous prime is 26806798791379. The next prime is 26806798791517. The reversal of 26806798791485 is 58419789760862.

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 14983255214041 + 11823543577444 = 3870821^2 + 3438538^2 .

It is a cyclic number.

It is not a de Polignac number, because 26806798791485 - 2²⁸ = 26806530356029 is a prime.

It is a super-2 number, since 2×26806798791485² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2680679879144 + ... + 2680679879153.

It is an arithmetic number, because the mean of its divisors is an integer number (8042039637447).

Almost surely, 2^{26806798791485} is an apocalyptic number.

It is an amenable number.

26806798791485 is a deficient number, since it is larger than the sum of its proper divisors (5361359758303).

26806798791485 is an equidigital number, since it uses as much as digits as its factorization.

26806798791485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5361359758302.

The product of its (nonzero) digits is 2926264320, while the sum is 80.

The spelling of 26806798791485 in words is "twenty-six trillion, eight hundred six billion, seven hundred ninety-eight million, seven hundred ninety-one thousand, four hundred eighty-five".