123439330768 has 90 divisors (see below), whose sum is σ = 273793830674. Its totient is φ = 53583286272.

The previous prime is 123439330741. The next prime is 123439330771. The reversal of 123439330768 is 867033934321.

It can be written as a sum of positive squares in 9 ways, for example, as 552626064 + 122886704704 = 23508^2 + 350552^2 .

It is a super-2 number, since 2×123439330768² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 86139780 + ... + 86141212.

Almost surely, 2^123439330768 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 123439330768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136896915337).

123439330768 is an abundant number, since it is smaller than the sum of its proper divisors (150354499906).

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

123439330768 is an equidigital number, since it uses as much as digits as its factorization.

123439330768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2921 (or 1465 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 49.

The spelling of 123439330768 in words is "one hundred twenty-three billion, four hundred thirty-nine million, three hundred thirty thousand, seven hundred sixty-eight".