81116327 has 8 divisors (see below), whose sum is σ = 84505680. Its totient is φ = 77794240.

The previous prime is 81116309. The next prime is 81116353. The reversal of 81116327 is 72361118.

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

It is a cyclic number.

It is not a de Polignac number, because 81116327 - 2¹² = 81112231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81116327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81116227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14348 + ... + 19185.

It is an arithmetic number, because the mean of its divisors is an integer number (10563210).

Almost surely, 2^81116327 is an apocalyptic number.

81116327 is a deficient number, since it is larger than the sum of its proper divisors (3389353).

81116327 is a wasteful number, since it uses less digits than its factorization.

81116327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33633.

The product of its digits is 2016, while the sum is 29.

The square root of 81116327 is about 9006.4602924789. The cubic root of 81116327 is about 432.8818986417.

The spelling of 81116327 in words is "eighty-one million, one hundred sixteen thousand, three hundred twenty-seven".