13609442943 has 12 divisors (see below), whose sum is σ = 19660436640. Its totient is φ = 9071876256.

The previous prime is 13609442909. The next prime is 13609442947. The reversal of 13609442943 is 34924490631.

13609442943 is a `hidden beast` number, since 13 + 609 + 4 + 4 + 29 + 4 + 3 = 666.

It is not a de Polignac number, because 13609442943 - 2¹² = 13609438847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13609442947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7038 + ... + 165131.

It is an arithmetic number, because the mean of its divisors is an integer number (1638369720).

Almost surely, 2^13609442943 is an apocalyptic number.

13609442943 is a deficient number, since it is larger than the sum of its proper divisors (6050993697).

13609442943 is a wasteful number, since it uses less digits than its factorization.

13609442943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180958 (or 180955 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 13609442943 in words is "thirteen billion, six hundred nine million, four hundred forty-two thousand, nine hundred forty-three".