13502938765 has 4 divisors (see below), whose sum is σ = 16203526524. Its totient is φ = 10802351008.

The previous prime is 13502938717. The next prime is 13502938769. The reversal of 13502938765 is 56783920531.

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 7121165769 + 6381772996 = 84387^2 + 79886^2 .

It is a cyclic number.

It is not a de Polignac number, because 13502938765 - 2¹¹ = 13502936717 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13502938769) 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, 1350293872 + ... + 1350293881.

It is an arithmetic number, because the mean of its divisors is an integer number (4050881631).

Almost surely, 2^13502938765 is an apocalyptic number.

It is an amenable number.

13502938765 is a deficient number, since it is larger than the sum of its proper divisors (2700587759).

13502938765 is an equidigital number, since it uses as much as digits as its factorization.

13502938765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700587758.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 13502938765 in words is "thirteen billion, five hundred two million, nine hundred thirty-eight thousand, seven hundred sixty-five".