20933549227 has 2 divisors, whose sum is σ = 20933549228. Its totient is φ = 20933549226.

The previous prime is 20933549209. The next prime is 20933549251. The reversal of 20933549227 is 72294533902.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20933549227 is a prime.

It is not a weakly prime, because it can be changed into another prime (20933549297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10466774613 + 10466774614.

It is an arithmetic number, because the mean of its divisors is an integer number (10466774614).

Almost surely, 2^20933549227 is an apocalyptic number.

20933549227 is a deficient number, since it is larger than the sum of its proper divisors (1).

20933549227 is an equidigital number, since it uses as much as digits as its factorization.

20933549227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 20933549227 in words is "twenty billion, nine hundred thirty-three million, five hundred forty-nine thousand, two hundred twenty-seven".