81298469683 has 2 divisors, whose sum is σ = 81298469684. Its totient is φ = 81298469682.

The previous prime is 81298469653. The next prime is 81298469701. The reversal of 81298469683 is 38696489218.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81298469683 is a prime.

It is not a weakly prime, because it can be changed into another prime (81298469653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40649234841 + 40649234842.

It is an arithmetic number, because the mean of its divisors is an integer number (40649234842).

Almost surely, 2^81298469683 is an apocalyptic number.

81298469683 is a deficient number, since it is larger than the sum of its proper divisors (1).

81298469683 is an equidigital number, since it uses as much as digits as its factorization.

81298469683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35831808, while the sum is 64.

The spelling of 81298469683 in words is "eighty-one billion, two hundred ninety-eight million, four hundred sixty-nine thousand, six hundred eighty-three".