123923936817 has 12 divisors (see below), whose sum is σ = 183164062224. Its totient is φ = 80694656280.

The previous prime is 123923936809. The next prime is 123923936827. The reversal of 123923936817 is 718639329321.

123923936817 is a `hidden beast` number, since 1 + 2 + 39 + 239 + 368 + 17 = 666.

It is not a de Polignac number, because 123923936817 - 2³ = 123923936809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123923936827) 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 in 11 ways as a sum of consecutive naturals, for example, 160108059 + ... + 160108832.

It is an arithmetic number, because the mean of its divisors is an integer number (15263671852).

Almost surely, 2^123923936817 is an apocalyptic number.

It is an amenable number.

123923936817 is a deficient number, since it is larger than the sum of its proper divisors (59240125407).

123923936817 is a wasteful number, since it uses less digits than its factorization.

123923936817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320216940 (or 320216937 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The spelling of 123923936817 in words is "one hundred twenty-three billion, nine hundred twenty-three million, nine hundred thirty-six thousand, eight hundred seventeen".