84502346209 has 2 divisors, whose sum is σ = 84502346210. Its totient is φ = 84502346208.

The previous prime is 84502346207. The next prime is 84502346213. The reversal of 84502346209 is 90264320548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83942313984 + 560032225 = 289728^2 + 23665^2 .

It is a cyclic number.

It is not a de Polignac number, because 84502346209 - 2¹ = 84502346207 is a prime.

Together with 84502346207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (84502346207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42251173104 + 42251173105.

It is an arithmetic number, because the mean of its divisors is an integer number (42251173105).

Almost surely, 2^84502346209 is an apocalyptic number.

It is an amenable number.

84502346209 is a deficient number, since it is larger than the sum of its proper divisors (1).

84502346209 is an equidigital number, since it uses as much as digits as its factorization.

84502346209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 84502346209 in words is "eighty-four billion, five hundred two million, three hundred forty-six thousand, two hundred nine".