69984713209 has 2 divisors, whose sum is σ = 69984713210. Its totient is φ = 69984713208.

The previous prime is 69984713203. The next prime is 69984713219. The reversal of 69984713209 is 90231748996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61367675625 + 8617037584 = 247725^2 + 92828^2 .

It is a cyclic number.

It is not a de Polignac number, because 69984713209 - 2⁵ = 69984713177 is a prime.

It is not a weakly prime, because it can be changed into another prime (69984713203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34992356604 + 34992356605.

It is an arithmetic number, because the mean of its divisors is an integer number (34992356605).

Almost surely, 2^69984713209 is an apocalyptic number.

It is an amenable number.

69984713209 is a deficient number, since it is larger than the sum of its proper divisors (1).

69984713209 is an equidigital number, since it uses as much as digits as its factorization.

69984713209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 69984713209 in words is "sixty-nine billion, nine hundred eighty-four million, seven hundred thirteen thousand, two hundred nine".