81880075558822 has 16 divisors (see below), whose sum is σ = 126782335411200. Its totient is φ = 39619302982920.

The previous prime is 81880075558763. The next prime is 81880075558849. The reversal of 81880075558822 is 22885557008818.

81880075558822 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32975079 + ... + 35371117.

It is an arithmetic number, because the mean of its divisors is an integer number (7923895963200).

Almost surely, 2^{81880075558822} is an apocalyptic number.

81880075558822 is a deficient number, since it is larger than the sum of its proper divisors (44902259852378).

81880075558822 is a wasteful number, since it uses less digits than its factorization.

81880075558822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947251.

The product of its (nonzero) digits is 114688000, while the sum is 67.

The spelling of 81880075558822 in words is "eighty-one trillion, eight hundred eighty billion, seventy-five million, five hundred fifty-eight thousand, eight hundred twenty-two".