44106561839991 has 16 divisors (see below), whose sum is σ = 67390186671104. Its totient is φ = 25136179244064.

The previous prime is 44106561839987. The next prime is 44106561840031. The reversal of 44106561839991 is 19993816560144.

It is not a de Polignac number, because 44106561839991 - 2² = 44106561839987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44106561839971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2815424431 + ... + 2815440096.

It is an arithmetic number, because the mean of its divisors is an integer number (4211886666944).

Almost surely, 2^{44106561839991} is an apocalyptic number.

44106561839991 is a deficient number, since it is larger than the sum of its proper divisors (23283624831113).

44106561839991 is a wasteful number, since it uses less digits than its factorization.

44106561839991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5630864910.

The product of its (nonzero) digits is 50388480, while the sum is 66.

The spelling of 44106561839991 in words is "forty-four trillion, one hundred six billion, five hundred sixty-one million, eight hundred thirty-nine thousand, nine hundred ninety-one".