3644131222013 has 24 divisors (see below), whose sum is σ = 3764356440768. Its totient is φ = 3527021019456.

The previous prime is 3644131221977. The next prime is 3644131222063. The reversal of 3644131222013 is 3102221314463.

3644131222013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3644131222013 - 2²⁶ = 3644064113149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644131222063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86163170 + ... + 86205452.

It is an arithmetic number, because the mean of its divisors is an integer number (156848185032).

Almost surely, 2^{3644131222013} is an apocalyptic number.

It is an amenable number.

3644131222013 is a deficient number, since it is larger than the sum of its proper divisors (120225218755).

3644131222013 is an equidigital number, since it uses as much as digits as its factorization.

3644131222013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42753 (or 42686 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 3644131222013 its reverse (3102221314463), we get a palindrome (6746352536476).

The spelling of 3644131222013 in words is "three trillion, six hundred forty-four billion, one hundred thirty-one million, two hundred twenty-two thousand, thirteen".