13971556422 has 12 divisors (see below), whose sum is σ = 30271705620. Its totient is φ = 4657185468.

The previous prime is 13971556399. The next prime is 13971556433. The reversal of 13971556422 is 22465517931.

13971556422 is a `hidden beast` number, since 1 + 3 + 9 + 71 + 556 + 4 + 22 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 388098772 + ... + 388098807.

It is an arithmetic number, because the mean of its divisors is an integer number (2522642135).

Almost surely, 2^13971556422 is an apocalyptic number.

13971556422 is an abundant number, since it is smaller than the sum of its proper divisors (16300149198).

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

13971556422 is a wasteful number, since it uses less digits than its factorization.

13971556422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776197587 (or 776197584 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The spelling of 13971556422 in words is "thirteen billion, nine hundred seventy-one million, five hundred fifty-six thousand, four hundred twenty-two".