14066815493 has 2 divisors, whose sum is σ = 14066815494. Its totient is φ = 14066815492.

The previous prime is 14066815447. The next prime is 14066815537. The reversal of 14066815493 is 39451866041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11293950529 + 2772864964 = 106273^2 + 52658^2 .

It is a cyclic number.

It is not a de Polignac number, because 14066815493 - 2²⁰ = 14065766917 is a prime.

It is a super-2 number, since 2×14066815493² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14066845493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7033407746 + 7033407747.

It is an arithmetic number, because the mean of its divisors is an integer number (7033407747).

Almost surely, 2^14066815493 is an apocalyptic number.

It is an amenable number.

14066815493 is a deficient number, since it is larger than the sum of its proper divisors (1).

14066815493 is an equidigital number, since it uses as much as digits as its factorization.

14066815493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 14066815493 in words is "fourteen billion, sixty-six million, eight hundred fifteen thousand, four hundred ninety-three".