13444431785 has 8 divisors (see below), whose sum is σ = 16137734976. Its totient is φ = 10752600880.

The previous prime is 13444431779. The next prime is 13444431829. The reversal of 13444431785 is 58713444431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13444431785 - 2⁸ = 13444431529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347879 + ... + 384588.

It is an arithmetic number, because the mean of its divisors is an integer number (2017216872).

Almost surely, 2^13444431785 is an apocalyptic number.

It is an amenable number.

13444431785 is a deficient number, since it is larger than the sum of its proper divisors (2693303191).

13444431785 is an equidigital number, since it uses as much as digits as its factorization.

13444431785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736143.

The product of its digits is 645120, while the sum is 44.

The spelling of 13444431785 in words is "thirteen billion, four hundred forty-four million, four hundred thirty-one thousand, seven hundred eighty-five".