20443101286919 has 2 divisors, whose sum is σ = 20443101286920. Its totient is φ = 20443101286918.

The previous prime is 20443101286891. The next prime is 20443101286921. The reversal of 20443101286919 is 91968210134402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20443101286919 - 2²⁴ = 20443084509703 is a prime.

It is a super-2 number, since 2×20443101286919² (a number of 27 digits) contains 22 as substring.

Together with 20443101286921, 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 (20443101286939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10221550643459 + 10221550643460.

It is an arithmetic number, because the mean of its divisors is an integer number (10221550643460).

Almost surely, 2^{20443101286919} is an apocalyptic number.

20443101286919 is a deficient number, since it is larger than the sum of its proper divisors (1).

20443101286919 is an equidigital number, since it uses as much as digits as its factorization.

20443101286919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 20443101286919 in words is "twenty trillion, four hundred forty-three billion, one hundred one million, two hundred eighty-six thousand, nine hundred nineteen".