81167333376118 has 8 divisors (see below), whose sum is σ = 132819272797320. Its totient is φ = 36894242443680.

The previous prime is 81167333376113. The next prime is 81167333376167.

It is a happy number.

81167333376118 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81167333376113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1844712122163 + ... + 1844712122206.

It is an arithmetic number, because the mean of its divisors is an integer number (16602409099665).

Almost surely, 2^{81167333376118} is an apocalyptic number.

81167333376118 is a deficient number, since it is larger than the sum of its proper divisors (51651939421202).

81167333376118 is a wasteful number, since it uses less digits than its factorization.

81167333376118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689424244382.

The product of its digits is 9144576, while the sum is 58.

The spelling of 81167333376118 in words is "eighty-one trillion, one hundred sixty-seven billion, three hundred thirty-three million, three hundred seventy-six thousand, one hundred eighteen".