123663023989 has 2 divisors, whose sum is σ = 123663023990. Its totient is φ = 123663023988.

The previous prime is 123663023951. The next prime is 123663024011. The reversal of 123663023989 is 989320366321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119002231089 + 4660792900 = 344967^2 + 68270^2 .

It is a cyclic number.

It is not a de Polignac number, because 123663023989 - 2²³ = 123654635381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123663023089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61831511994 + 61831511995.

It is an arithmetic number, because the mean of its divisors is an integer number (61831511995).

Almost surely, 2^123663023989 is an apocalyptic number.

It is an amenable number.

123663023989 is a deficient number, since it is larger than the sum of its proper divisors (1).

123663023989 is an equidigital number, since it uses as much as digits as its factorization.

123663023989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 52.

The spelling of 123663023989 in words is "one hundred twenty-three billion, six hundred sixty-three million, twenty-three thousand, nine hundred eighty-nine".