81034840714 has 16 divisors (see below), whose sum is σ = 121869566280. Its totient is φ = 40411791360.

The previous prime is 81034840699. The next prime is 81034840717. The reversal of 81034840714 is 41704843018.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 59886410089 + 21148430625 = 244717^2 + 145425^2 .

It is not an unprimeable number, because it can be changed into a prime (81034840717) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1154794 + ... + 1222954.

Almost surely, 2^81034840714 is an apocalyptic number.

81034840714 is a deficient number, since it is larger than the sum of its proper divisors (40834725566).

81034840714 is a wasteful number, since it uses less digits than its factorization.

81034840714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69705.

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 81034840714 in words is "eighty-one billion, thirty-four million, eight hundred forty thousand, seven hundred fourteen".