13105644144 has 40 divisors (see below), whose sum is σ = 33945624960. Its totient is φ = 4357015488.

The previous prime is 13105644067. The next prime is 13105644197. The reversal of 13105644144 is 44144650131.

It is a super-2 number, since 2×13105644144² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342012 + ... + 378395.

It is an arithmetic number, because the mean of its divisors is an integer number (848640624).

Almost surely, 2^13105644144 is an apocalyptic number.

It is an amenable number.

13105644144 is an abundant number, since it is smaller than the sum of its proper divisors (20839980816).

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

13105644144 is a wasteful number, since it uses less digits than its factorization.

13105644144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720797 (or 720791 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 13105644144 in words is "thirteen billion, one hundred five million, six hundred forty-four thousand, one hundred forty-four".