81419585198683 has 2 divisors, whose sum is σ = 81419585198684. Its totient is φ = 81419585198682.

The previous prime is 81419585198681. The next prime is 81419585198719. The reversal of 81419585198683 is 38689158591418.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 81419585198683 - 2¹ = 81419585198681 is a prime.

Together with 81419585198681, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (81419585198681) 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 as a sum of consecutive naturals, namely, 40709792599341 + 40709792599342.

It is an arithmetic number, because the mean of its divisors is an integer number (40709792599342).

Almost surely, 2^{81419585198683} is an apocalyptic number.

81419585198683 is a deficient number, since it is larger than the sum of its proper divisors (1).

81419585198683 is an equidigital number, since it uses as much as digits as its factorization.

81419585198683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 597196800, while the sum is 76.

The spelling of 81419585198683 in words is "eighty-one trillion, four hundred nineteen billion, five hundred eighty-five million, one hundred ninety-eight thousand, six hundred eighty-three".