12684476401 has 2 divisors, whose sum is σ = 12684476402. Its totient is φ = 12684476400.

The previous prime is 12684476383. The next prime is 12684476443. The reversal of 12684476401 is 10467448621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12294374400 + 390102001 = 110880^2 + 19751^2 .

It is a cyclic number.

It is not a de Polignac number, because 12684476401 - 2⁵ = 12684476369 is a prime.

It is not a weakly prime, because it can be changed into another prime (12684477401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6342238200 + 6342238201.

It is an arithmetic number, because the mean of its divisors is an integer number (6342238201).

Almost surely, 2^12684476401 is an apocalyptic number.

It is an amenable number.

12684476401 is a deficient number, since it is larger than the sum of its proper divisors (1).

12684476401 is an equidigital number, since it uses as much as digits as its factorization.

12684476401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 12684476401 in words is "twelve billion, six hundred eighty-four million, four hundred seventy-six thousand, four hundred one".