12886638601 has 2 divisors, whose sum is σ = 12886638602. Its totient is φ = 12886638600.

The previous prime is 12886638593. The next prime is 12886638649. The reversal of 12886638601 is 10683668821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12882477001 + 4161600 = 113501^2 + 2040^2 .

It is a cyclic number.

It is not a de Polignac number, because 12886638601 - 2³ = 12886638593 is a prime.

It is a super-3 number, since 3×12886638601³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (12886638101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6443319300 + 6443319301.

It is an arithmetic number, because the mean of its divisors is an integer number (6443319301).

Almost surely, 2^12886638601 is an apocalyptic number.

It is an amenable number.

12886638601 is a deficient number, since it is larger than the sum of its proper divisors (1).

12886638601 is an equidigital number, since it uses as much as digits as its factorization.

12886638601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 12886638601 in words is "twelve billion, eight hundred eighty-six million, six hundred thirty-eight thousand, six hundred one".