2168953459249 has 2 divisors, whose sum is σ = 2168953459250. Its totient is φ = 2168953459248.

The previous prime is 2168953459177. The next prime is 2168953459261. The reversal of 2168953459249 is 9429543598612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1540905134224 + 628048325025 = 1241332^2 + 792495^2 .

It is a cyclic number.

It is not a de Polignac number, because 2168953459249 - 2³⁹ = 1619197645361 is a prime.

It is not a weakly prime, because it can be changed into another prime (2168953459949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084476729624 + 1084476729625.

It is an arithmetic number, because the mean of its divisors is an integer number (1084476729625).

Almost surely, 2^{2168953459249} is an apocalyptic number.

It is an amenable number.

2168953459249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168953459249 is an equidigital number, since it uses as much as digits as its factorization.

2168953459249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 167961600, while the sum is 67.

The spelling of 2168953459249 in words is "two trillion, one hundred sixty-eight billion, nine hundred fifty-three million, four hundred fifty-nine thousand, two hundred forty-nine".