123543321738 has 8 divisors (see below), whose sum is σ = 247086643488. Its totient is φ = 41181107244.

The previous prime is 123543321701. The next prime is 123543321751. The reversal of 123543321738 is 837123345321.

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

123543321738 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 123543321738.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10295276806 + ... + 10295276817.

It is an arithmetic number, because the mean of its divisors is an integer number (30885830436).

Almost surely, 2^123543321738 is an apocalyptic number.

123543321738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

123543321738 is a wasteful number, since it uses less digits than its factorization.

123543321738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20590553628.

The product of its digits is 362880, while the sum is 42.

The spelling of 123543321738 in words is "one hundred twenty-three billion, five hundred forty-three million, three hundred twenty-one thousand, seven hundred thirty-eight".