20331440027 has 2 divisors, whose sum is σ = 20331440028. Its totient is φ = 20331440026.

The previous prime is 20331440011. The next prime is 20331440053. The reversal of 20331440027 is 72004413302.

It is an a-pointer prime, because the next prime (20331440053) can be obtained adding 20331440027 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20331440027 - 2⁴ = 20331440011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20331439978 and 20331440005.

It is not a weakly prime, because it can be changed into another prime (20331400027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165720013 + 10165720014.

It is an arithmetic number, because the mean of its divisors is an integer number (10165720014).

Almost surely, 2^20331440027 is an apocalyptic number.

20331440027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331440027 is an equidigital number, since it uses as much as digits as its factorization.

20331440027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

Adding to 20331440027 its reverse (72004413302), we get a palindrome (92335853329).

The spelling of 20331440027 in words is "twenty billion, three hundred thirty-one million, four hundred forty thousand, twenty-seven".