123654545239 has 2 divisors, whose sum is σ = 123654545240. Its totient is φ = 123654545238.

The previous prime is 123654545137. The next prime is 123654545249. The reversal of 123654545239 is 932545456321.

It is a strong prime.

It is an emirp because it is prime and its reverse (932545456321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123654545239 - 2⁷ = 123654545111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123654545192 and 123654545201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123654545249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61827272619 + 61827272620.

It is an arithmetic number, because the mean of its divisors is an integer number (61827272620).

Almost surely, 2^123654545239 is an apocalyptic number.

123654545239 is a deficient number, since it is larger than the sum of its proper divisors (1).

123654545239 is an equidigital number, since it uses as much as digits as its factorization.

123654545239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888000, while the sum is 49.

The spelling of 123654545239 in words is "one hundred twenty-three billion, six hundred fifty-four million, five hundred forty-five thousand, two hundred thirty-nine".