82091000249 has 2 divisors, whose sum is σ = 82091000250. Its totient is φ = 82091000248.

The previous prime is 82091000231. The next prime is 82091000293. The reversal of 82091000249 is 94200019028.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57962970025 + 24128030224 = 240755^2 + 155332^2 .

It is a cyclic number.

It is not a de Polignac number, because 82091000249 - 2²⁸ = 81822564793 is a prime.

It is not a weakly prime, because it can be changed into another prime (82091000219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41045500124 + 41045500125.

It is an arithmetic number, because the mean of its divisors is an integer number (41045500125).

Almost surely, 2^82091000249 is an apocalyptic number.

It is an amenable number.

82091000249 is a deficient number, since it is larger than the sum of its proper divisors (1).

82091000249 is an equidigital number, since it uses as much as digits as its factorization.

82091000249 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 35.

The spelling of 82091000249 in words is "eighty-two billion, ninety-one million, two hundred forty-nine", and thus it is an aban number.