14428646778643 has 2 divisors, whose sum is σ = 14428646778644. Its totient is φ = 14428646778642.

The previous prime is 14428646778641. The next prime is 14428646778661. The reversal of 14428646778643 is 34687764682441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 14428646778643 - 2¹ = 14428646778641 is a prime.

Together with 14428646778641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (14428646778641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7214323389321 + 7214323389322.

It is an arithmetic number, because the mean of its divisors is an integer number (7214323389322).

Almost surely, 2^{14428646778643} is an apocalyptic number.

14428646778643 is a deficient number, since it is larger than the sum of its proper divisors (1).

14428646778643 is an equidigital number, since it uses as much as digits as its factorization.

14428646778643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1040449536, while the sum is 70.

The spelling of 14428646778643 in words is "fourteen trillion, four hundred twenty-eight billion, six hundred forty-six million, seven hundred seventy-eight thousand, six hundred forty-three".