123543320000 has 140 divisors (see below), whose sum is σ = 322472806920. Its totient is φ = 46816128000.

The previous prime is 123543319919. The next prime is 123543320003. The reversal of 123543320000 is 23345321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123543320003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 678722 + ... + 841278.

Almost surely, 2^123543320000 is an apocalyptic number.

123543320000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123543320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161236403460).

123543320000 is an abundant number, since it is smaller than the sum of its proper divisors (198929486920).

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

123543320000 is an equidigital number, since it uses as much as digits as its factorization.

123543320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162608 (or 162583 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 123543320000 its reverse (23345321), we get a palindrome (123566665321).

The spelling of 123543320000 in words is "one hundred twenty-three billion, five hundred forty-three million, three hundred twenty thousand".