14478766833821 has 2 divisors, whose sum is σ = 14478766833822. Its totient is φ = 14478766833820.

The previous prime is 14478766833779. The next prime is 14478766833823. The reversal of 14478766833821 is 12833866787441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13834903420900 + 643863412921 = 3719530^2 + 802411^2 .

It is a cyclic number.

It is not a de Polignac number, because 14478766833821 - 2³⁴ = 14461586964637 is a prime.

Together with 14478766833823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14478766833823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7239383416910 + 7239383416911.

It is an arithmetic number, because the mean of its divisors is an integer number (7239383416911).

Almost surely, 2^{14478766833821} is an apocalyptic number.

It is an amenable number.

14478766833821 is a deficient number, since it is larger than the sum of its proper divisors (1).

14478766833821 is an equidigital number, since it uses as much as digits as its factorization.

14478766833821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 260112384, while the sum is 68.

The spelling of 14478766833821 in words is "fourteen trillion, four hundred seventy-eight billion, seven hundred sixty-six million, eight hundred thirty-three thousand, eight hundred twenty-one".