13261944631120 has 160 divisors (see below), whose sum is σ = 31982872965120. Its totient is φ = 5108812800000.

The previous prime is 13261944631109. The next prime is 13261944631163. The reversal of 13261944631120 is 2113644916231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1020064620 + ... + 1020077620.

It is an arithmetic number, because the mean of its divisors is an integer number (199892956032).

Almost surely, 2^{13261944631120} is an apocalyptic number.

13261944631120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13261944631120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15991436482560).

13261944631120 is an abundant number, since it is smaller than the sum of its proper divisors (18720928334000).

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

13261944631120 is a wasteful number, since it uses less digits than its factorization.

13261944631120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15005 (or 14999 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 13261944631120 in words is "thirteen trillion, two hundred sixty-one billion, nine hundred forty-four million, six hundred thirty-one thousand, one hundred twenty".