20800228027 has 2 divisors, whose sum is σ = 20800228028. Its totient is φ = 20800228026.

The previous prime is 20800227949. The next prime is 20800228067. The reversal of 20800228027 is 72082200802.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20800228027 - 2¹⁵ = 20800195259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20800228027.

It is not a weakly prime, because it can be changed into another prime (20800228067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10400114013 + 10400114014.

It is an arithmetic number, because the mean of its divisors is an integer number (10400114014).

Almost surely, 2^20800228027 is an apocalyptic number.

20800228027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20800228027 is an equidigital number, since it uses as much as digits as its factorization.

20800228027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 31.

Adding to 20800228027 its reverse (72082200802), we get a palindrome (92882428829).

The spelling of 20800228027 in words is "twenty billion, eight hundred million, two hundred twenty-eight thousand, twenty-seven".