82378952849 has 2 divisors, whose sum is σ = 82378952850. Its totient is φ = 82378952848.

The previous prime is 82378952837. The next prime is 82378952891. The reversal of 82378952849 is 94825987328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76662534400 + 5716418449 = 276880^2 + 75607^2 .

It is a cyclic number.

It is not a de Polignac number, because 82378952849 - 2¹² = 82378948753 is a prime.

It is not a weakly prime, because it can be changed into another prime (82378952899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41189476424 + 41189476425.

It is an arithmetic number, because the mean of its divisors is an integer number (41189476425).

Almost surely, 2^82378952849 is an apocalyptic number.

It is an amenable number.

82378952849 is a deficient number, since it is larger than the sum of its proper divisors (1).

82378952849 is an equidigital number, since it uses as much as digits as its factorization.

82378952849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69672960, while the sum is 65.

The spelling of 82378952849 in words is "eighty-two billion, three hundred seventy-eight million, nine hundred fifty-two thousand, eight hundred forty-nine".