13147345247 has 4 divisors (see below), whose sum is σ = 13149502080. Its totient is φ = 13145188416.

The previous prime is 13147345231. The next prime is 13147345271. The reversal of 13147345247 is 74254374131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13147345247 - 2⁴ = 13147345231 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 (13147345217) 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, 1069247 + ... + 1081472.

It is an arithmetic number, because the mean of its divisors is an integer number (3287375520).

Almost surely, 2^13147345247 is an apocalyptic number.

13147345247 is a deficient number, since it is larger than the sum of its proper divisors (2156833).

13147345247 is an equidigital number, since it uses as much as digits as its factorization.

13147345247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156832.

The product of its digits is 282240, while the sum is 41.

The spelling of 13147345247 in words is "thirteen billion, one hundred forty-seven million, three hundred forty-five thousand, two hundred forty-seven".