123179503913 has 2 divisors, whose sum is σ = 123179503914. Its totient is φ = 123179503912.

The previous prime is 123179503861. The next prime is 123179503943. The reversal of 123179503913 is 319305971321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106751185984 + 16428317929 = 326728^2 + 128173^2 .

It is an emirp because it is prime and its reverse (319305971321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123179503913 - 2⁶ = 123179503849 is a prime.

It is not a weakly prime, because it can be changed into another prime (123179503943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61589751956 + 61589751957.

It is an arithmetic number, because the mean of its divisors is an integer number (61589751957).

Almost surely, 2^123179503913 is an apocalyptic number.

It is an amenable number.

123179503913 is a deficient number, since it is larger than the sum of its proper divisors (1).

123179503913 is an equidigital number, since it uses as much as digits as its factorization.

123179503913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153090, while the sum is 44.

The spelling of 123179503913 in words is "one hundred twenty-three billion, one hundred seventy-nine million, five hundred three thousand, nine hundred thirteen".