20263569427 has 2 divisors, whose sum is σ = 20263569428. Its totient is φ = 20263569426.

The previous prime is 20263569421. The next prime is 20263569437. The reversal of 20263569427 is 72496536202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20263569427 - 2³ = 20263569419 is a prime.

It is a super-2 number, since 2×20263569427² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20263569421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10131784713 + 10131784714.

It is an arithmetic number, because the mean of its divisors is an integer number (10131784714).

Almost surely, 2^20263569427 is an apocalyptic number.

20263569427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20263569427 is an equidigital number, since it uses as much as digits as its factorization.

20263569427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 20263569427 in words is "twenty billion, two hundred sixty-three million, five hundred sixty-nine thousand, four hundred twenty-seven".