44668086138 has 144 divisors (see below), whose sum is σ = 110902128480. Its totient is φ = 12951259776.

The previous prime is 44668086121. The next prime is 44668086149. The reversal of 44668086138 is 83168086644.

44668086138 is a `hidden beast` number, since 446 + 68 + 0 + 8 + 6 + 138 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11384245 + ... + 11388167.

It is an arithmetic number, because the mean of its divisors is an integer number (770153670).

Almost surely, 2^44668086138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44668086138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55451064240).

44668086138 is an abundant number, since it is smaller than the sum of its proper divisors (66234042342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44668086138 is a wasteful number, since it uses less digits than its factorization.

44668086138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173 (or 4157 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 54.

The spelling of 44668086138 in words is "forty-four billion, six hundred sixty-eight million, eighty-six thousand, one hundred thirty-eight".