138320345152 has 56 divisors (see below), whose sum is σ = 301790039040. Its totient is φ = 62377781760.

The previous prime is 138320345129. The next prime is 138320345153. The reversal of 138320345152 is 251543023831.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (138320345153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684127 + ... + 862942.

It is an arithmetic number, because the mean of its divisors is an integer number (5389107840).

Almost surely, 2^138320345152 is an apocalyptic number.

It is an amenable number.

138320345152 is an abundant number, since it is smaller than the sum of its proper divisors (163469693888).

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

138320345152 is a wasteful number, since it uses less digits than its factorization.

138320345152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547219 (or 1547209 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 138320345152 its reverse (251543023831), we get a palindrome (389863368983).

The spelling of 138320345152 in words is "one hundred thirty-eight billion, three hundred twenty million, three hundred forty-five thousand, one hundred fifty-two".