83681313713 has 2 divisors, whose sum is σ = 83681313714. Its totient is φ = 83681313712.

The previous prime is 83681313649. The next prime is 83681313719. The reversal of 83681313713 is 31731318638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46728171889 + 36953141824 = 216167^2 + 192232^2 .

It is a cyclic number.

It is not a de Polignac number, because 83681313713 - 2⁶ = 83681313649 is a prime.

It is not a weakly prime, because it can be changed into another prime (83681313719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41840656856 + 41840656857.

It is an arithmetic number, because the mean of its divisors is an integer number (41840656857).

Almost surely, 2^83681313713 is an apocalyptic number.

It is an amenable number.

83681313713 is a deficient number, since it is larger than the sum of its proper divisors (1).

83681313713 is an equidigital number, since it uses as much as digits as its factorization.

83681313713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The spelling of 83681313713 in words is "eighty-three billion, six hundred eighty-one million, three hundred thirteen thousand, seven hundred thirteen".