12115513152 has 42 divisors (see below), whose sum is σ = 34726932578. Its totient is φ = 4038504192.

The previous prime is 12115513121. The next prime is 12115513169. The reversal of 12115513152 is 25131551121.

It is a happy number.

12115513152 is a `hidden beast` number, since 121 + 15 + 513 + 15 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6760786176 + 5354726976 = 82224^2 + 73176^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10516363 + ... + 10517514.

Almost surely, 2^12115513152 is an apocalyptic number.

12115513152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12115513152 is an abundant number, since it is smaller than the sum of its proper divisors (22611419426).

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

12115513152 is a wasteful number, since it uses less digits than its factorization.

12115513152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21033895 (or 21033882 counting only the distinct ones).

The product of its digits is 1500, while the sum is 27.

The spelling of 12115513152 in words is "twelve billion, one hundred fifteen million, five hundred thirteen thousand, one hundred fifty-two".