123843067656 has 192 divisors, whose sum is σ = 393174362880. Its totient is φ = 32144353920.

The previous prime is 123843067651. The next prime is 123843067681. The reversal of 123843067656 is 656760348321.

It is a junction number, because it is equal to n+sod(n) for n = 123843067599 and 123843067608.

It is not an unprimeable number, because it can be changed into a prime (123843067651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26218911 + ... + 26223633.

It is an arithmetic number, because the mean of its divisors is an integer number (2047783140).

Almost surely, 2^123843067656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123843067656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196587181440).

123843067656 is an abundant number, since it is smaller than the sum of its proper divisors (269331295224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123843067656 is a wasteful number, since it uses less digits than its factorization.

123843067656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784 (or 6773 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 123843067656 in words is "one hundred twenty-three billion, eight hundred forty-three million, sixty-seven thousand, six hundred fifty-six".