13265459765 has 4 divisors (see below), whose sum is σ = 15918551724. Its totient is φ = 10612367808.

The previous prime is 13265459761. The next prime is 13265459791. The reversal of 13265459765 is 56795456231.

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 3474159364 + 9791300401 = 58942^2 + 98951^2 .

It is a cyclic number.

It is not a de Polignac number, because 13265459765 - 2² = 13265459761 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13265459761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1326545972 + ... + 1326545981.

It is an arithmetic number, because the mean of its divisors is an integer number (3979637931).

Almost surely, 2^13265459765 is an apocalyptic number.

It is an amenable number.

13265459765 is a deficient number, since it is larger than the sum of its proper divisors (2653091959).

13265459765 is an equidigital number, since it uses as much as digits as its factorization.

13265459765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653091958.

The product of its digits is 6804000, while the sum is 53.

The spelling of 13265459765 in words is "thirteen billion, two hundred sixty-five million, four hundred fifty-nine thousand, seven hundred sixty-five".