13144653805 has 4 divisors (see below), whose sum is σ = 15773584572. Its totient is φ = 10515723040.

The previous prime is 13144653779. The next prime is 13144653829. The reversal of 13144653805 is 50835644131.

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 1449096489 + 11695557316 = 38067^2 + 108146^2 .

It is not a de Polignac number, because 13144653805 - 2⁵ = 13144653773 is a prime.

It is a Duffinian number.

It is a congruent 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, 1314465376 + ... + 1314465385.

It is an arithmetic number, because the mean of its divisors is an integer number (3943396143).

Almost surely, 2^13144653805 is an apocalyptic number.

It is an amenable number.

13144653805 is a deficient number, since it is larger than the sum of its proper divisors (2628930767).

13144653805 is an equidigital number, since it uses as much as digits as its factorization.

13144653805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628930766.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 13144653805 in words is "thirteen billion, one hundred forty-four million, six hundred fifty-three thousand, eight hundred five".