12651387601 has 2 divisors, whose sum is σ = 12651387602. Its totient is φ = 12651387600.

The previous prime is 12651387559. The next prime is 12651387653. The reversal of 12651387601 is 10678315621.

It is a happy number.

12651387601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7314354576 + 5337033025 = 85524^2 + 73055^2 .

It is a cyclic number.

It is not a de Polignac number, because 12651387601 - 2¹¹ = 12651385553 is a prime.

It is not a weakly prime, because it can be changed into another prime (12651387691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6325693800 + 6325693801.

It is an arithmetic number, because the mean of its divisors is an integer number (6325693801).

Almost surely, 2^12651387601 is an apocalyptic number.

It is an amenable number.

12651387601 is a deficient number, since it is larger than the sum of its proper divisors (1).

12651387601 is an equidigital number, since it uses as much as digits as its factorization.

12651387601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 12651387601 in words is "twelve billion, six hundred fifty-one million, three hundred eighty-seven thousand, six hundred one".