13205971344 has 20 divisors (see below), whose sum is σ = 34115426096. Its totient is φ = 4401990432.

The previous prime is 13205971333. The next prime is 13205971349. The reversal of 13205971344 is 44317950231.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13205971349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137562154 + ... + 137562249.

Almost surely, 2^13205971344 is an apocalyptic number.

It is an amenable number.

13205971344 is an abundant number, since it is smaller than the sum of its proper divisors (20909454752).

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

13205971344 is a wasteful number, since it uses less digits than its factorization.

13205971344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275124414 (or 275124408 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 13205971344 in words is "thirteen billion, two hundred five million, nine hundred seventy-one thousand, three hundred forty-four".