81334673333 has 16 divisors (see below), whose sum is σ = 89237364480. Its totient is φ = 73823533056.

The previous prime is 81334673293. The next prime is 81334673347. The reversal of 81334673333 is 33337643318.

It is not a de Polignac number, because 81334673333 - 2³⁴ = 64154804149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81334673363) 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, 646460 + ... + 761957.

It is an arithmetic number, because the mean of its divisors is an integer number (5577335280).

Almost surely, 2^81334673333 is an apocalyptic number.

It is an amenable number.

81334673333 is a deficient number, since it is larger than the sum of its proper divisors (7902691147).

81334673333 is a wasteful number, since it uses less digits than its factorization.

81334673333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408556.

The product of its digits is 979776, while the sum is 44.

The spelling of 81334673333 in words is "eighty-one billion, three hundred thirty-four million, six hundred seventy-three thousand, three hundred thirty-three".