123668144447 has 8 divisors (see below), whose sum is σ = 124716786480. Its totient is φ = 122621087680.

The previous prime is 123668144443. The next prime is 123668144543. The reversal of 123668144447 is 744441866321.

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 123668144447 - 2² = 123668144443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123668144395 and 123668144404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123668144443) 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 7 ways as a sum of consecutive naturals, for example, 239372 + ... + 551937.

It is an arithmetic number, because the mean of its divisors is an integer number (15589598310).

Almost surely, 2^123668144447 is an apocalyptic number.

123668144447 is a deficient number, since it is larger than the sum of its proper divisors (1048642033).

123668144447 is a wasteful number, since it uses less digits than its factorization.

123668144447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792633.

The product of its digits is 3096576, while the sum is 50.

The spelling of 123668144447 in words is "one hundred twenty-three billion, six hundred sixty-eight million, one hundred forty-four thousand, four hundred forty-seven".