20243401427 has 2 divisors, whose sum is σ = 20243401428. Its totient is φ = 20243401426.

The previous prime is 20243401403. The next prime is 20243401429. The reversal of 20243401427 is 72410434202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20243401427 - 2²² = 20239207123 is a prime.

Together with 20243401429, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20243401427.

It is not a weakly prime, because it can be changed into another prime (20243401429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121700713 + 10121700714.

It is an arithmetic number, because the mean of its divisors is an integer number (10121700714).

Almost surely, 2^20243401427 is an apocalyptic number.

20243401427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20243401427 is an equidigital number, since it uses as much as digits as its factorization.

20243401427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 29.

Adding to 20243401427 its reverse (72410434202), we get a palindrome (92653835629).

The spelling of 20243401427 in words is "twenty billion, two hundred forty-three million, four hundred one thousand, four hundred twenty-seven".