123336242651 has 2 divisors, whose sum is σ = 123336242652. Its totient is φ = 123336242650.

The previous prime is 123336242611. The next prime is 123336242677. The reversal of 123336242651 is 156242633321.

It is a strong prime.

It is an emirp because it is prime and its reverse (156242633321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123336242651 - 2⁶ = 123336242587 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (123336242611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61668121325 + 61668121326.

It is an arithmetic number, because the mean of its divisors is an integer number (61668121326).

Almost surely, 2^123336242651 is an apocalyptic number.

123336242651 is a deficient number, since it is larger than the sum of its proper divisors (1).

123336242651 is an equidigital number, since it uses as much as digits as its factorization.

123336242651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 38.

Adding to 123336242651 its reverse (156242633321), we get a palindrome (279578875972).

The spelling of 123336242651 in words is "one hundred twenty-three billion, three hundred thirty-six million, two hundred forty-two thousand, six hundred fifty-one".