81003715333 has 2 divisors, whose sum is σ = 81003715334. Its totient is φ = 81003715332.

The previous prime is 81003715321. The next prime is 81003715339. The reversal of 81003715333 is 33351730018.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80226030564 + 777684769 = 283242^2 + 27887^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81003715333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81003715339) 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 as a sum of consecutive naturals, namely, 40501857666 + 40501857667.

It is an arithmetic number, because the mean of its divisors is an integer number (40501857667).

Almost surely, 2^81003715333 is an apocalyptic number.

It is an amenable number.

81003715333 is a deficient number, since it is larger than the sum of its proper divisors (1).

81003715333 is an equidigital number, since it uses as much as digits as its factorization.

81003715333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 81003715333 in words is "eighty-one billion, three million, seven hundred fifteen thousand, three hundred thirty-three".