123660663241 has 2 divisors, whose sum is σ = 123660663242. Its totient is φ = 123660663240.

The previous prime is 123660663239. The next prime is 123660663251. The reversal of 123660663241 is 142366066321.

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., 116261222841 + 7399440400 = 340971^2 + 86020^2 .

It is a cyclic number.

It is not a de Polignac number, because 123660663241 - 2¹ = 123660663239 is a prime.

Together with 123660663239, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 123660663194 and 123660663203.

It is not a weakly prime, because it can be changed into another prime (123660663251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61830331620 + 61830331621.

It is an arithmetic number, because the mean of its divisors is an integer number (61830331621).

Almost surely, 2^123660663241 is an apocalyptic number.

It is an amenable number.

123660663241 is a deficient number, since it is larger than the sum of its proper divisors (1).

123660663241 is an equidigital number, since it uses as much as digits as its factorization.

123660663241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 40.

The spelling of 123660663241 in words is "one hundred twenty-three billion, six hundred sixty million, six hundred sixty-three thousand, two hundred forty-one".