84020232817 has 2 divisors, whose sum is σ = 84020232818. Its totient is φ = 84020232816.

The previous prime is 84020232809. The next prime is 84020232839. The reversal of 84020232817 is 71823202048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49379950656 + 34640282161 = 222216^2 + 186119^2 .

It is a cyclic number.

It is not a de Polignac number, because 84020232817 - 2³ = 84020232809 is a prime.

It is not a weakly prime, because it can be changed into another prime (84020232617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42010116408 + 42010116409.

It is an arithmetic number, because the mean of its divisors is an integer number (42010116409).

Almost surely, 2^84020232817 is an apocalyptic number.

It is an amenable number.

84020232817 is a deficient number, since it is larger than the sum of its proper divisors (1).

84020232817 is an equidigital number, since it uses as much as digits as its factorization.

84020232817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 84020232817 in words is "eighty-four billion, twenty million, two hundred thirty-two thousand, eight hundred seventeen".