81044704118052 has 480 divisors, whose sum is σ = 238568925006720. Its totient is φ = 23862326906880.

The previous prime is 81044704118051. The next prime is 81044704118057. The reversal of 81044704118052 is 25081140744018.

81044704118052 is a `hidden beast` number, since 8 + 1 + 0 + 44 + 70 + 411 + 80 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 81044704117989 and 81044704118007.

It is not an unprimeable number, because it can be changed into a prime (81044704118051) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 6637018227 + ... + 6637030437.

It is an arithmetic number, because the mean of its divisors is an integer number (497018593764).

Almost surely, 2^{81044704118052} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81044704118052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119284462503360).

81044704118052 is an abundant number, since it is smaller than the sum of its proper divisors (157524220888668).

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

81044704118052 is a wasteful number, since it uses less digits than its factorization.

81044704118052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13433 (or 13422 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The spelling of 81044704118052 in words is "eighty-one trillion, forty-four billion, seven hundred four million, one hundred eighteen thousand, fifty-two".