12150398568 has 128 divisors (see below), whose sum is σ = 38390584320. Its totient is φ = 3112680960.

The previous prime is 12150398543. The next prime is 12150398573. The reversal of 12150398568 is 86589305121.

It is a happy number.

It is a super-2 number, since 2×12150398568² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89871 + ... + 179937.

It is an arithmetic number, because the mean of its divisors is an integer number (299926440).

Almost surely, 2^12150398568 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 12150398568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19195292160).

12150398568 is an abundant number, since it is smaller than the sum of its proper divisors (26240185752).

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

12150398568 is a wasteful number, since it uses less digits than its factorization.

12150398568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90167 (or 90163 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 12150398568 in words is "twelve billion, one hundred fifty million, three hundred ninety-eight thousand, five hundred sixty-eight".