80821933111 has 2 divisors, whose sum is σ = 80821933112. Its totient is φ = 80821933110.

The previous prime is 80821933099. The next prime is 80821933169. The reversal of 80821933111 is 11133912808.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80821933111 - 2⁵ = 80821933079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80821933711) 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, 40410966555 + 40410966556.

It is an arithmetic number, because the mean of its divisors is an integer number (40410966556).

Almost surely, 2^80821933111 is an apocalyptic number.

80821933111 is a deficient number, since it is larger than the sum of its proper divisors (1).

80821933111 is an equidigital number, since it uses as much as digits as its factorization.

80821933111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 80821933111 in words is "eighty billion, eight hundred twenty-one million, nine hundred thirty-three thousand, one hundred eleven".