44859818981 has 4 divisors (see below), whose sum is σ = 44969501100. Its totient is φ = 44750136864.

The previous prime is 44859818921. The next prime is 44859819013. The reversal of 44859818981 is 18981895844.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42336766081 + 2523052900 = 205759^2 + 50230^2 .

It is a cyclic number.

It is not a de Polignac number, because 44859818981 - 2³⁰ = 43786077157 is a prime.

It is a super-2 number, since 2×44859818981² (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 (44859818921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54840446 + ... + 54841263.

It is an arithmetic number, because the mean of its divisors is an integer number (11242375275).

Almost surely, 2^44859818981 is an apocalyptic number.

It is an amenable number.

44859818981 is a deficient number, since it is larger than the sum of its proper divisors (109682119).

44859818981 is a wasteful number, since it uses less digits than its factorization.

44859818981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109682118.

The product of its digits is 26542080, while the sum is 65.

The spelling of 44859818981 in words is "forty-four billion, eight hundred fifty-nine million, eight hundred eighteen thousand, nine hundred eighty-one".