13444581137 has 8 divisors (see below), whose sum is σ = 14614096896. Its totient is φ = 12294396432.

The previous prime is 13444581097. The next prime is 13444581187. The reversal of 13444581137 is 73118544431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13444581137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13444581094 and 13444581103.

It is not an unprimeable number, because it can be changed into a prime (13444581187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4831313 + ... + 4834094.

It is an arithmetic number, because the mean of its divisors is an integer number (1826762112).

Almost surely, 2^13444581137 is an apocalyptic number.

It is an amenable number.

13444581137 is a deficient number, since it is larger than the sum of its proper divisors (1169515759).

13444581137 is a wasteful number, since it uses less digits than its factorization.

13444581137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9665527.

The product of its digits is 161280, while the sum is 41.

The spelling of 13444581137 in words is "thirteen billion, four hundred forty-four million, five hundred eighty-one thousand, one hundred thirty-seven".