308666052689 has 2 divisors, whose sum is σ = 308666052690. Its totient is φ = 308666052688.

The previous prime is 308666052683. The next prime is 308666052719. The reversal of 308666052689 is 986250666803.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308460273664 + 205779025 = 555392^2 + 14345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-308666052689 is a prime.

It is not a weakly prime, because it can be changed into another prime (308666052683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154333026344 + 154333026345.

It is an arithmetic number, because the mean of its divisors is an integer number (154333026345).

Almost surely, 2^308666052689 is an apocalyptic number.

It is an amenable number.

308666052689 is a deficient number, since it is larger than the sum of its proper divisors (1).

308666052689 is an equidigital number, since it uses as much as digits as its factorization.

308666052689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22394880, while the sum is 59.

The spelling of 308666052689 in words is "three hundred eight billion, six hundred sixty-six million, fifty-two thousand, six hundred eighty-nine".