44435442161 has 4 divisors (see below), whose sum is σ = 48475027824. Its totient is φ = 40395856500.

The previous prime is 44435442127. The next prime is 44435442169. The reversal of 44435442161 is 16124453444.

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 44435442161 - 2²² = 44431247857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44435442169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2019792815 + ... + 2019792836.

It is an arithmetic number, because the mean of its divisors is an integer number (12118756956).

Almost surely, 2^44435442161 is an apocalyptic number.

It is an amenable number.

44435442161 is a deficient number, since it is larger than the sum of its proper divisors (4039585663).

44435442161 is a wasteful number, since it uses less digits than its factorization.

44435442161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039585662.

The product of its digits is 184320, while the sum is 38.

The spelling of 44435442161 in words is "forty-four billion, four hundred thirty-five million, four hundred forty-two thousand, one hundred sixty-one".