82386921811 has 2 divisors, whose sum is σ = 82386921812. Its totient is φ = 82386921810.

The previous prime is 82386921779. The next prime is 82386921919. The reversal of 82386921811 is 11812968328.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82386921811 - 2⁵ = 82386921779 is a prime.

It is not a weakly prime, because it can be changed into another prime (82386921511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41193460905 + 41193460906.

It is an arithmetic number, because the mean of its divisors is an integer number (41193460906).

Almost surely, 2^82386921811 is an apocalyptic number.

82386921811 is a deficient number, since it is larger than the sum of its proper divisors (1).

82386921811 is an equidigital number, since it uses as much as digits as its factorization.

82386921811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 49.

The spelling of 82386921811 in words is "eighty-two billion, three hundred eighty-six million, nine hundred twenty-one thousand, eight hundred eleven".