613600331209 has 2 divisors, whose sum is σ = 613600331210. Its totient is φ = 613600331208.

The previous prime is 613600331191. The next prime is 613600331237. The reversal of 613600331209 is 902133006316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319405825600 + 294194505609 = 565160^2 + 542397^2 .

It is a cyclic number.

It is not a de Polignac number, because 613600331209 - 2²⁹ = 613063460297 is a prime.

It is not a weakly prime, because it can be changed into another prime (613600331609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306800165604 + 306800165605.

It is an arithmetic number, because the mean of its divisors is an integer number (306800165605).

Almost surely, 2^613600331209 is an apocalyptic number.

It is an amenable number.

613600331209 is a deficient number, since it is larger than the sum of its proper divisors (1).

613600331209 is an equidigital number, since it uses as much as digits as its factorization.

613600331209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 34.

The spelling of 613600331209 in words is "six hundred thirteen billion, six hundred million, three hundred thirty-one thousand, two hundred nine".