12788649968 has 10 divisors (see below), whose sum is σ = 24778009344. Its totient is φ = 6394324976.

The previous prime is 12788649967. The next prime is 12788649977. The reversal of 12788649968 is 86994688721.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12788649898 and 12788649907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12788649967) by changing a digit.

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 as a sum of consecutive naturals, namely, 399645296 + ... + 399645327.

Almost surely, 2^12788649968 is an apocalyptic number.

It is an amenable number.

12788649968 is a deficient number, since it is larger than the sum of its proper divisors (11989359376).

12788649968 is an equidigital number, since it uses as much as digits as its factorization.

12788649968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799290631 (or 799290625 counting only the distinct ones).

The product of its digits is 83607552, while the sum is 68.

The spelling of 12788649968 in words is "twelve billion, seven hundred eighty-eight million, six hundred forty-nine thousand, nine hundred sixty-eight".