44161911617 has 4 divisors (see below), whose sum is σ = 44175771696. Its totient is φ = 44148051540.

The previous prime is 44161911613. The next prime is 44161911637. The reversal of 44161911617 is 71611916144.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44161911617 - 2² = 44161911613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44161911613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6925259 + ... + 6931632.

It is an arithmetic number, because the mean of its divisors is an integer number (11043942924).

Almost surely, 2^44161911617 is an apocalyptic number.

It is an amenable number.

44161911617 is a deficient number, since it is larger than the sum of its proper divisors (13860079).

44161911617 is a wasteful number, since it uses less digits than its factorization.

44161911617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13860078.

The product of its digits is 36288, while the sum is 41.

The spelling of 44161911617 in words is "forty-four billion, one hundred sixty-one million, nine hundred eleven thousand, six hundred seventeen".