123648366013 has 2 divisors, whose sum is σ = 123648366014. Its totient is φ = 123648366012.

The previous prime is 123648366007. The next prime is 123648366043. The reversal of 123648366013 is 310663846321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106799547204 + 16848818809 = 326802^2 + 129803^2 .

It is a cyclic number.

It is not a de Polignac number, because 123648366013 - 2⁹ = 123648365501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123648366043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61824183006 + 61824183007.

It is an arithmetic number, because the mean of its divisors is an integer number (61824183007).

Almost surely, 2^123648366013 is an apocalyptic number.

It is an amenable number.

123648366013 is a deficient number, since it is larger than the sum of its proper divisors (1).

123648366013 is an equidigital number, since it uses as much as digits as its factorization.

123648366013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 123648366013 in words is "one hundred twenty-three billion, six hundred forty-eight million, three hundred sixty-six thousand, thirteen".