13317651943 has 16 divisors (see below), whose sum is σ = 13934514880. Its totient is φ = 12715315200.

The previous prime is 13317651923. The next prime is 13317651953. The reversal of 13317651943 is 34915671331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13317651943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13317651943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13317651923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 984103 + ... + 997543.

It is an arithmetic number, because the mean of its divisors is an integer number (870907180).

Almost surely, 2^13317651943 is an apocalyptic number.

13317651943 is a deficient number, since it is larger than the sum of its proper divisors (616862937).

13317651943 is a wasteful number, since it uses less digits than its factorization.

13317651943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13978.

The product of its digits is 204120, while the sum is 43.

The spelling of 13317651943 in words is "thirteen billion, three hundred seventeen million, six hundred fifty-one thousand, nine hundred forty-three".