13645544144 has 40 divisors (see below), whose sum is σ = 27789203520. Its totient is φ = 6478469888.

The previous prime is 13645544137. The next prime is 13645544177. The reversal of 13645544144 is 44144554631.

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, 84914 + ... + 185745.

It is an arithmetic number, because the mean of its divisors is an integer number (694730088).

Almost surely, 2^13645544144 is an apocalyptic number.

It is an amenable number.

13645544144 is an abundant number, since it is smaller than the sum of its proper divisors (14143659376).

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

13645544144 is a wasteful number, since it uses less digits than its factorization.

13645544144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270827 (or 270821 counting only the distinct ones).

The product of its digits is 460800, while the sum is 41.

The spelling of 13645544144 in words is "thirteen billion, six hundred forty-five million, five hundred forty-four thousand, one hundred forty-four".