12688996601 has 16 divisors (see below), whose sum is σ = 13334630400. Its totient is φ = 12058582800.

The previous prime is 12688996577. The next prime is 12688996627. The reversal of 12688996601 is 10669988621.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12688996601 is a prime.

It is a super-2 number, since 2×12688996601² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12688996631) 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 in 15 ways as a sum of consecutive naturals, for example, 1992260 + ... + 1998618.

It is an arithmetic number, because the mean of its divisors is an integer number (833414400).

Almost surely, 2^12688996601 is an apocalyptic number.

It is an amenable number.

12688996601 is a deficient number, since it is larger than the sum of its proper divisors (645633799).

12688996601 is a wasteful number, since it uses less digits than its factorization.

12688996601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7540.

The product of its (nonzero) digits is 2239488, while the sum is 56.

The spelling of 12688996601 in words is "twelve billion, six hundred eighty-eight million, nine hundred ninety-six thousand, six hundred one".