12516845568 has 48 divisors (see below), whose sum is σ = 33370122240. Its totient is φ = 4172279808.

The previous prime is 12516845521. The next prime is 12516845569. The reversal of 12516845568 is 86554861521.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×12516845568² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12516845568.

It is not an unprimeable number, because it can be changed into a prime (12516845569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012480 + ... + 1024767.

It is an arithmetic number, because the mean of its divisors is an integer number (695210880).

Almost surely, 2^12516845568 is an apocalyptic number.

It is an amenable number.

12516845568 is an abundant number, since it is smaller than the sum of its proper divisors (20853276672).

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

12516845568 is an equidigital number, since it uses as much as digits as its factorization.

12516845568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037272 (or 2037252 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 51.

The spelling of 12516845568 in words is "twelve billion, five hundred sixteen million, eight hundred forty-five thousand, five hundred sixty-eight".