81116195595 has 16 divisors (see below), whose sum is σ = 132951424032. Its totient is φ = 42206800640.

The previous prime is 81116195593. The next prime is 81116195609. The reversal of 81116195595 is 59559161118.

It is not a de Polignac number, because 81116195595 - 2¹ = 81116195593 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (81116195593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65947512 + ... + 65948741.

It is an arithmetic number, because the mean of its divisors is an integer number (8309464002).

Almost surely, 2^81116195595 is an apocalyptic number.

81116195595 is a deficient number, since it is larger than the sum of its proper divisors (51835228437).

81116195595 is a wasteful number, since it uses less digits than its factorization.

81116195595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131896302.

The product of its digits is 486000, while the sum is 51.

The spelling of 81116195595 in words is "eighty-one billion, one hundred sixteen million, one hundred ninety-five thousand, five hundred ninety-five".