26479752769 has 4 divisors (see below), whose sum is σ = 26486431744. Its totient is φ = 26473073796.

The previous prime is 26479752757. The next prime is 26479752791. The reversal of 26479752769 is 96725797462.

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.

It is a cyclic number.

It is not a de Polignac number, because 26479752769 - 2¹⁷ = 26479621697 is a prime.

It is a super-2 number, since 2×26479752769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26479752769.

It is not an unprimeable number, because it can be changed into a prime (26479752269) 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, 3333537 + ... + 3341470.

It is an arithmetic number, because the mean of its divisors is an integer number (6621607936).

Almost surely, 2^26479752769 is an apocalyptic number.

It is an amenable number.

26479752769 is a deficient number, since it is larger than the sum of its proper divisors (6678975).

26479752769 is an equidigital number, since it uses as much as digits as its factorization.

26479752769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6678974.

The product of its digits is 80015040, while the sum is 64.

The spelling of 26479752769 in words is "twenty-six billion, four hundred seventy-nine million, seven hundred fifty-two thousand, seven hundred sixty-nine".