84065081249 has 2 divisors, whose sum is σ = 84065081250. Its totient is φ = 84065081248.

The previous prime is 84065081201. The next prime is 84065081273. The reversal of 84065081249 is 94218056048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82602783649 + 1462297600 = 287407^2 + 38240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84065081249 is a prime.

It is not a weakly prime, because it can be changed into another prime (84065081279) 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, 42032540624 + 42032540625.

It is an arithmetic number, because the mean of its divisors is an integer number (42032540625).

Almost surely, 2^84065081249 is an apocalyptic number.

It is an amenable number.

84065081249 is a deficient number, since it is larger than the sum of its proper divisors (1).

84065081249 is an equidigital number, since it uses as much as digits as its factorization.

84065081249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 84065081249 in words is "eighty-four billion, sixty-five million, eighty-one thousand, two hundred forty-nine".