14406216661 has 2 divisors, whose sum is σ = 14406216662. Its totient is φ = 14406216660.

The previous prime is 14406216593. The next prime is 14406216683. The reversal of 14406216661 is 16661260441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11131516036 + 3274700625 = 105506^2 + 57225^2 .

It is a cyclic number.

It is not a de Polignac number, because 14406216661 - 2¹³ = 14406208469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14406216661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14406216061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7203108330 + 7203108331.

It is an arithmetic number, because the mean of its divisors is an integer number (7203108331).

Almost surely, 2^14406216661 is an apocalyptic number.

It is an amenable number.

14406216661 is a deficient number, since it is larger than the sum of its proper divisors (1).

14406216661 is an equidigital number, since it uses as much as digits as its factorization.

14406216661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

It can be divided in two parts, 1440 and 6216661, that added together give a triangular number (6218101 = T₃₅₂₆).

The spelling of 14406216661 in words is "fourteen billion, four hundred six million, two hundred sixteen thousand, six hundred sixty-one".