20110404427 has 2 divisors, whose sum is σ = 20110404428. Its totient is φ = 20110404426.

The previous prime is 20110404329. The next prime is 20110404451. The reversal of 20110404427 is 72440401102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20110404427 - 2²³ = 20102015819 is a prime.

It is not a weakly prime, because it can be changed into another prime (20110404487) 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, 10055202213 + 10055202214.

It is an arithmetic number, because the mean of its divisors is an integer number (10055202214).

Almost surely, 2^20110404427 is an apocalyptic number.

20110404427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110404427 is an equidigital number, since it uses as much as digits as its factorization.

20110404427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 25.

Adding to 20110404427 its reverse (72440401102), we get a palindrome (92550805529).

The spelling of 20110404427 in words is "twenty billion, one hundred ten million, four hundred four thousand, four hundred twenty-seven".