13909065368 has 128 divisors (see below), whose sum is σ = 31138560000. Its totient is φ = 5754240000.

The previous prime is 13909065343. The next prime is 13909065371. The reversal of 13909065368 is 86356090931.

It is a super-2 number, since 2×13909065368² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7722068 + ... + 7723868.

It is an arithmetic number, because the mean of its divisors is an integer number (243270000).

Almost surely, 2^13909065368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13909065368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15569280000).

13909065368 is an abundant number, since it is smaller than the sum of its proper divisors (17229494632).

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

13909065368 is a wasteful number, since it uses less digits than its factorization.

13909065368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017 (or 2013 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 13909065368 in words is "thirteen billion, nine hundred nine million, sixty-five thousand, three hundred sixty-eight".