81108095 has 4 divisors (see below), whose sum is σ = 97329720. Its totient is φ = 64886472.

The previous prime is 81108089. The next prime is 81108113. The reversal of 81108095 is 59080118.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59080118 = 2 ⋅29540059.

It is a cyclic number.

It is not a de Polignac number, because 81108095 - 2⁶ = 81108031 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8110805 + ... + 8110814.

It is an arithmetic number, because the mean of its divisors is an integer number (24332430).

Almost surely, 2^81108095 is an apocalyptic number.

81108095 is a deficient number, since it is larger than the sum of its proper divisors (16221625).

81108095 is a wasteful number, since it uses less digits than its factorization.

81108095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16221624.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 81108095 is about 9006.0032755935. The cubic root of 81108095 is about 432.8672546340.

The spelling of 81108095 in words is "eighty-one million, one hundred eight thousand, ninety-five".