13997856943 has 16 divisors (see below), whose sum is σ = 16171928640. Its totient is φ = 11867616000.

The previous prime is 13997856937. The next prime is 13997856953. The reversal of 13997856943 is 34965879931.

13997856943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13997856943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13997856913) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 746523 + ... + 765043.

It is an arithmetic number, because the mean of its divisors is an integer number (1010745540).

Almost surely, 2^13997856943 is an apocalyptic number.

13997856943 is a deficient number, since it is larger than the sum of its proper divisors (2174071697).

13997856943 is a wasteful number, since it uses less digits than its factorization.

13997856943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19698.

The product of its digits is 44089920, while the sum is 64.

The spelling of 13997856943 in words is "thirteen billion, nine hundred ninety-seven million, eight hundred fifty-six thousand, nine hundred forty-three".