20402420024027 has 2 divisors, whose sum is σ = 20402420024028. Its totient is φ = 20402420024026.

The previous prime is 20402420024017. The next prime is 20402420024089. The reversal of 20402420024027 is 72042002420402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20402420024027 - 2⁴ = 20402420024011 is a prime.

It is not a weakly prime, because it can be changed into another prime (20402420024017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201210012013 + 10201210012014.

It is an arithmetic number, because the mean of its divisors is an integer number (10201210012014).

Almost surely, 2^{20402420024027} is an apocalyptic number.

20402420024027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402420024027 is an equidigital number, since it uses as much as digits as its factorization.

20402420024027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14336, while the sum is 29.

Adding to 20402420024027 its reverse (72042002420402), we get a palindrome (92444422444429).

The spelling of 20402420024027 in words is "twenty trillion, four hundred two billion, four hundred twenty million, twenty-four thousand, twenty-seven".