8349158661209 has 2 divisors, whose sum is σ = 8349158661210. Its totient is φ = 8349158661208.

The previous prime is 8349158661203. The next prime is 8349158661253. The reversal of 8349158661209 is 9021668519438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7866033576025 + 483125085184 = 2804645^2 + 695072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8349158661209 is a prime.

It is a super-2 number, since 2×8349158661209² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8349158661203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4174579330604 + 4174579330605.

It is an arithmetic number, because the mean of its divisors is an integer number (4174579330605).

Almost surely, 2^{8349158661209} is an apocalyptic number.

It is an amenable number.

8349158661209 is a deficient number, since it is larger than the sum of its proper divisors (1).

8349158661209 is an equidigital number, since it uses as much as digits as its factorization.

8349158661209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22394880, while the sum is 62.

The spelling of 8349158661209 in words is "eight trillion, three hundred forty-nine billion, one hundred fifty-eight million, six hundred sixty-one thousand, two hundred nine".