44171808911 has 16 divisors (see below), whose sum is σ = 44893094400. Its totient is φ = 43457974560.

The previous prime is 44171808899. The next prime is 44171808949. The reversal of 44171808911 is 11980817144.

It is a cyclic number.

It is not a de Polignac number, because 44171808911 - 2¹⁰ = 44171807887 is a prime.

It is a super-2 number, since 2×44171808911² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44171808311) 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, 7635326 + ... + 7641108.

It is an arithmetic number, because the mean of its divisors is an integer number (2805818400).

Almost surely, 2^44171808911 is an apocalyptic number.

44171808911 is a deficient number, since it is larger than the sum of its proper divisors (721285489).

44171808911 is a wasteful number, since it uses less digits than its factorization.

44171808911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6406.

The product of its (nonzero) digits is 64512, while the sum is 44.

The spelling of 44171808911 in words is "forty-four billion, one hundred seventy-one million, eight hundred eight thousand, nine hundred eleven".