123870236099 has 2 divisors, whose sum is σ = 123870236100. Its totient is φ = 123870236098.

The previous prime is 123870236023. The next prime is 123870236129. The reversal of 123870236099 is 990632078321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123870236099 - 2³² = 119575268803 is a prime.

It is not a weakly prime, because it can be changed into another prime (123870236899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61935118049 + 61935118050.

It is an arithmetic number, because the mean of its divisors is an integer number (61935118050).

Almost surely, 2^123870236099 is an apocalyptic number.

123870236099 is a deficient number, since it is larger than the sum of its proper divisors (1).

123870236099 is an equidigital number, since it uses as much as digits as its factorization.

123870236099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 123870236099 in words is "one hundred twenty-three billion, eight hundred seventy million, two hundred thirty-six thousand, ninety-nine".