13644485886 has 32 divisors (see below), whose sum is σ = 28175846400. Its totient is φ = 4400418240.

The previous prime is 13644485879. The next prime is 13644485887. The reversal of 13644485886 is 68858444631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13644485887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1516810 + ... + 1525778.

It is an arithmetic number, because the mean of its divisors is an integer number (880495200).

Almost surely, 2^13644485886 is an apocalyptic number.

13644485886 is an abundant number, since it is smaller than the sum of its proper divisors (14531360514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13644485886 is a wasteful number, since it uses less digits than its factorization.

13644485886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17184.

The product of its digits is 17694720, while the sum is 57.

The spelling of 13644485886 in words is "thirteen billion, six hundred forty-four million, four hundred eighty-five thousand, eight hundred eighty-six".