81459830395 has 16 divisors (see below), whose sum is σ = 98368272288. Its totient is φ = 64758044160.

The previous prime is 81459830381. The next prime is 81459830399. The reversal of 81459830395 is 59303895418.

It is not a de Polignac number, because 81459830395 - 2³⁵ = 47100092027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81459830399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490357 + ... + 635113.

It is an arithmetic number, because the mean of its divisors is an integer number (6148017018).

Almost surely, 2^81459830395 is an apocalyptic number.

81459830395 is a deficient number, since it is larger than the sum of its proper divisors (16908441893).

81459830395 is a wasteful number, since it uses less digits than its factorization.

81459830395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145470.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 81459830395 in words is "eighty-one billion, four hundred fifty-nine million, eight hundred thirty thousand, three hundred ninety-five".