123243657679 has 8 divisors (see below), whose sum is σ = 126645624800. Its totient is φ = 119845430496.

The previous prime is 123243657661. The next prime is 123243657683. The reversal of 123243657679 is 976756342321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123243657679 - 2¹¹ = 123243655631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123243658679) 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 in 7 ways as a sum of consecutive naturals, for example, 868104 + ... + 1000045.

It is an arithmetic number, because the mean of its divisors is an integer number (15830703100).

Almost surely, 2^123243657679 is an apocalyptic number.

123243657679 is a deficient number, since it is larger than the sum of its proper divisors (3401967121).

123243657679 is a wasteful number, since it uses less digits than its factorization.

123243657679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869969.

The product of its digits is 11430720, while the sum is 55.

The spelling of 123243657679 in words is "one hundred twenty-three billion, two hundred forty-three million, six hundred fifty-seven thousand, six hundred seventy-nine".