123201539328 has 144 divisors (see below), whose sum is σ = 376811367296. Its totient is φ = 35005685760.

The previous prime is 123201539327. The next prime is 123201539371. The reversal of 123201539328 is 823935102321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123201539327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 909750 + ... + 1036362.

Almost surely, 2^123201539328 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 123201539328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188405683648).

123201539328 is an abundant number, since it is smaller than the sum of its proper divisors (253609827968).

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

123201539328 is a wasteful number, since it uses less digits than its factorization.

123201539328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126820 (or 126806 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 123201539328 in words is "one hundred twenty-three billion, two hundred one million, five hundred thirty-nine thousand, three hundred twenty-eight".