168672278249 has 2 divisors, whose sum is σ = 168672278250. Its totient is φ = 168672278248.

The previous prime is 168672278149. The next prime is 168672278263. The reversal of 168672278249 is 942872276861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150907387024 + 17764891225 = 388468^2 + 133285^2 .

It is an emirp because it is prime and its reverse (942872276861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168672278249 - 2⁸ = 168672277993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168672278191 and 168672278200.

It is not a weakly prime, because it can be changed into another prime (168672278149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84336139124 + 84336139125.

It is an arithmetic number, because the mean of its divisors is an integer number (84336139125).

Almost surely, 2^168672278249 is an apocalyptic number.

It is an amenable number.

168672278249 is a deficient number, since it is larger than the sum of its proper divisors (1).

168672278249 is an equidigital number, since it uses as much as digits as its factorization.

168672278249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32514048, while the sum is 62.

The spelling of 168672278249 in words is "one hundred sixty-eight billion, six hundred seventy-two million, two hundred seventy-eight thousand, two hundred forty-nine".