12943515312 has 960 divisors, whose sum is σ = 51120537600. Its totient is φ = 3056901120.

The previous prime is 12943515289. The next prime is 12943515337. The reversal of 12943515312 is 21351534921.

It is a happy number.

12943515312 is a `hidden beast` number, since 1 + 2 + 94 + 35 + 1 + 531 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 301011963 + ... + 301012005.

It is an arithmetic number, because the mean of its divisors is an integer number (53250560).

Almost surely, 2^12943515312 is an apocalyptic number.

12943515312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12943515312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25560268800).

12943515312 is an abundant number, since it is smaller than the sum of its proper divisors (38177022288).

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

12943515312 is a wasteful number, since it uses less digits than its factorization.

12943515312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 118 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The spelling of 12943515312 in words is "twelve billion, nine hundred forty-three million, five hundred fifteen thousand, three hundred twelve".