20365642211 has 2 divisors, whose sum is σ = 20365642212. Its totient is φ = 20365642210.

The previous prime is 20365642159. The next prime is 20365642313. The reversal of 20365642211 is 11224656302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20365642211 - 2¹⁴ = 20365625827 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20365642411) 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, 10182821105 + 10182821106.

It is an arithmetic number, because the mean of its divisors is an integer number (10182821106).

Almost surely, 2^20365642211 is an apocalyptic number.

20365642211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20365642211 is an equidigital number, since it uses as much as digits as its factorization.

20365642211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 20365642211 in words is "twenty billion, three hundred sixty-five million, six hundred forty-two thousand, two hundred eleven".