13146044645 has 4 divisors (see below), whose sum is σ = 15775253580. Its totient is φ = 10516835712.

The previous prime is 13146044641. The next prime is 13146044647. The reversal of 13146044645 is 54644064131.

13146044645 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: 54644064131 = 6079 ⋅8988989.

It can be written as a sum of positive squares in 2 ways, for example, as 3306595009 + 9839449636 = 57503^2 + 99194^2 .

It is a cyclic number.

It is not a de Polignac number, because 13146044645 - 2² = 13146044641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13146044599 and 13146044608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13146044641) by changing a digit.

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, 1314604460 + ... + 1314604469.

It is an arithmetic number, because the mean of its divisors is an integer number (3943813395).

Almost surely, 2^13146044645 is an apocalyptic number.

It is an amenable number.

13146044645 is a deficient number, since it is larger than the sum of its proper divisors (2629208935).

13146044645 is an equidigital number, since it uses as much as digits as its factorization.

13146044645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629208934.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 13146044645 in words is "thirteen billion, one hundred forty-six million, forty-four thousand, six hundred forty-five".