13644422444631 has 16 divisors (see below), whose sum is σ = 20042931984768. Its totient is φ = 8187472212000.

The previous prime is 13644422444599. The next prime is 13644422444647.

13644422444631 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13644422444631 - 2⁵ = 13644422444599 is a prime.

It is a super-2 number, since 2×13644422444631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13644422444671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2046864721 + ... + 2046871386.

It is an arithmetic number, because the mean of its divisors is an integer number (1252683249048).

Almost surely, 2^{13644422444631} is an apocalyptic number.

13644422444631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13644422444631 is a deficient number, since it is larger than the sum of its proper divisors (6398509540137).

13644422444631 is a wasteful number, since it uses less digits than its factorization.

13644422444631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093736222.

The product of its digits is 5308416, while the sum is 48.

The spelling of 13644422444631 in words is "thirteen trillion, six hundred forty-four billion, four hundred twenty-two million, four hundred forty-four thousand, six hundred thirty-one".