12668730568 has 64 divisors (see below), whose sum is σ = 26615070720. Its totient is φ = 5613753600.

The previous prime is 12668730553. The next prime is 12668730583. The reversal of 12668730568 is 86503786621.

It is an interprime number because it is at equal distance from previous prime (12668730553) and next prime (12668730583).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393978 + ... + 424918.

It is an arithmetic number, because the mean of its divisors is an integer number (415860480).

Almost surely, 2^12668730568 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 12668730568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13307535360).

12668730568 is an abundant number, since it is smaller than the sum of its proper divisors (13946340152).

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

12668730568 is a wasteful number, since it uses less digits than its factorization.

12668730568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31118 (or 31114 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 12668730568 in words is "twelve billion, six hundred sixty-eight million, seven hundred thirty thousand, five hundred sixty-eight".