13909538456 has 32 divisors (see below), whose sum is σ = 28456142400. Its totient is φ = 6321447840.

The previous prime is 13909538429. The next prime is 13909538471. The reversal of 13909538456 is 65483590931.

13909538456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13909538398 and 13909538407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767111 + ... + 785033.

It is an arithmetic number, because the mean of its divisors is an integer number (889254450).

Almost surely, 2^13909538456 is an apocalyptic number.

It is an amenable number.

13909538456 is an abundant number, since it is smaller than the sum of its proper divisors (14546603944).

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

13909538456 is a wasteful number, since it uses less digits than its factorization.

13909538456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26759 (or 26755 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 53.

The spelling of 13909538456 in words is "thirteen billion, nine hundred nine million, five hundred thirty-eight thousand, four hundred fifty-six".