26642607265 has 4 divisors (see below), whose sum is σ = 31971128724. Its totient is φ = 21314085808.

The previous prime is 26642607209. The next prime is 26642607287. The reversal of 26642607265 is 56270624662.

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 15803506944 + 10839100321 = 125712^2 + 104111^2 .

It is a cyclic number.

It is not a de Polignac number, because 26642607265 - 2¹¹ = 26642605217 is a prime.

It is a Duffinian 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, 2664260722 + ... + 2664260731.

It is an arithmetic number, because the mean of its divisors is an integer number (7992782181).

Almost surely, 2^26642607265 is an apocalyptic number.

It is an amenable number.

26642607265 is a deficient number, since it is larger than the sum of its proper divisors (5328521459).

26642607265 is an equidigital number, since it uses as much as digits as its factorization.

26642607265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328521458.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 26642607265 in words is "twenty-six billion, six hundred forty-two million, six hundred seven thousand, two hundred sixty-five".