82077225091 has 2 divisors, whose sum is σ = 82077225092. Its totient is φ = 82077225090.

The previous prime is 82077225073. The next prime is 82077225151. The reversal of 82077225091 is 19052277028.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82077225091 - 2¹⁷ = 82077094019 is a prime.

It is not a weakly prime, because it can be changed into another prime (82077225001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41038612545 + 41038612546.

It is an arithmetic number, because the mean of its divisors is an integer number (41038612546).

Almost surely, 2^82077225091 is an apocalyptic number.

82077225091 is a deficient number, since it is larger than the sum of its proper divisors (1).

82077225091 is an equidigital number, since it uses as much as digits as its factorization.

82077225091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 82077225091 in words is "eighty-two billion, seventy-seven million, two hundred twenty-five thousand, ninety-one".