20433633427 has 2 divisors, whose sum is σ = 20433633428. Its totient is φ = 20433633426.

The previous prime is 20433633349. The next prime is 20433633439. The reversal of 20433633427 is 72433633402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20433633427 - 2¹⁵ = 20433600659 is a prime.

It is not a weakly prime, because it can be changed into another prime (20433633127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216816713 + 10216816714.

It is an arithmetic number, because the mean of its divisors is an integer number (10216816714).

Almost surely, 2^20433633427 is an apocalyptic number.

20433633427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20433633427 is an equidigital number, since it uses as much as digits as its factorization.

20433633427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 37.

The spelling of 20433633427 in words is "twenty billion, four hundred thirty-three million, six hundred thirty-three thousand, four hundred twenty-seven".