81044447777114 has 8 divisors (see below), whose sum is σ = 121566870817428. Its totient is φ = 40522157504640.

The previous prime is 81044447777107. The next prime is 81044447777159. The reversal of 81044447777114 is 41177774444018.

It can be written as a sum of positive squares in 2 ways, for example, as 51225039465889 + 29819408311225 = 7157167^2 + 5460715^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31651607 + ... + 34116170.

Almost surely, 2^{81044447777114} is an apocalyptic number.

81044447777114 is a deficient number, since it is larger than the sum of its proper divisors (40522423040314).

81044447777114 is a wasteful number, since it uses less digits than its factorization.

81044447777114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66383920.

The product of its (nonzero) digits is 19668992, while the sum is 59.

The spelling of 81044447777114 in words is "eighty-one trillion, forty-four billion, four hundred forty-seven million, seven hundred seventy-seven thousand, one hundred fourteen".