81016883 has 4 divisors (see below), whose sum is σ = 85782600. Its totient is φ = 76251168.

The previous prime is 81016829. The next prime is 81016891. The reversal of 81016883 is 38861018.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 81016883 - 2¹⁶ = 80951347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81016823) 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, 2382833 + ... + 2382866.

It is an arithmetic number, because the mean of its divisors is an integer number (21445650).

Almost surely, 2^81016883 is an apocalyptic number.

81016883 is a deficient number, since it is larger than the sum of its proper divisors (4765717).

81016883 is a wasteful number, since it uses less digits than its factorization.

81016883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4765716.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 81016883 is about 9000.9378955751. The cubic root of 81016883 is about 432.7049301144.

The spelling of 81016883 in words is "eighty-one million, sixteen thousand, eight hundred eighty-three".