13145564695 has 4 divisors (see below), whose sum is σ = 15774677640. Its totient is φ = 10516451752.

The previous prime is 13145564681. The next prime is 13145564743. The reversal of 13145564695 is 59646554131.

13145564695 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59646554131 = 237217 ⋅251443.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13145564695 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 congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1314556465 + ... + 1314556474.

It is an arithmetic number, because the mean of its divisors is an integer number (3943669410).

Almost surely, 2^13145564695 is an apocalyptic number.

13145564695 is a deficient number, since it is larger than the sum of its proper divisors (2629112945).

13145564695 is an equidigital number, since it uses as much as digits as its factorization.

13145564695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629112944.

The product of its digits is 1944000, while the sum is 49.

The spelling of 13145564695 in words is "thirteen billion, one hundred forty-five million, five hundred sixty-four thousand, six hundred ninety-five".