123650544079 has 2 divisors, whose sum is σ = 123650544080. Its totient is φ = 123650544078.

The previous prime is 123650544071. The next prime is 123650544097. The reversal of 123650544079 is 970445056321.

It is a happy number.

Together with next prime (123650544097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123650544079 - 2³ = 123650544071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123650544071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61825272039 + 61825272040.

It is an arithmetic number, because the mean of its divisors is an integer number (61825272040).

Almost surely, 2^123650544079 is an apocalyptic number.

123650544079 is a deficient number, since it is larger than the sum of its proper divisors (1).

123650544079 is an equidigital number, since it uses as much as digits as its factorization.

123650544079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 123650544079 in words is "one hundred twenty-three billion, six hundred fifty million, five hundred forty-four thousand, seventy-nine".