12915598938 has 128 divisors (see below), whose sum is σ = 31113206784. Its totient is φ = 3529344000.

The previous prime is 12915598933. The next prime is 12915598961. The reversal of 12915598938 is 83989551921.

It is not an unprimeable number, because it can be changed into a prime (12915598933) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2554513 + ... + 2559563.

It is an arithmetic number, because the mean of its divisors is an integer number (243071928).

Almost surely, 2^12915598938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12915598938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15556603392).

12915598938 is an abundant number, since it is smaller than the sum of its proper divisors (18197607846).

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

12915598938 is a wasteful number, since it uses less digits than its factorization.

12915598938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5180.

The product of its digits is 6998400, while the sum is 60.

The spelling of 12915598938 in words is "twelve billion, nine hundred fifteen million, five hundred ninety-eight thousand, nine hundred thirty-eight".