20314447187 has 2 divisors, whose sum is σ = 20314447188. Its totient is φ = 20314447186.

The previous prime is 20314447183. The next prime is 20314447247. The reversal of 20314447187 is 78174441302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20314447187 - 2² = 20314447183 is a prime.

It is not a weakly prime, because it can be changed into another prime (20314447183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10157223593 + 10157223594.

It is an arithmetic number, because the mean of its divisors is an integer number (10157223594).

Almost surely, 2^20314447187 is an apocalyptic number.

20314447187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20314447187 is an equidigital number, since it uses as much as digits as its factorization.

20314447187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150528, while the sum is 41.

Adding to 20314447187 its reverse (78174441302), we get a palindrome (98488888489).

The spelling of 20314447187 in words is "twenty billion, three hundred fourteen million, four hundred forty-seven thousand, one hundred eighty-seven".