20003000447 has 2 divisors, whose sum is σ = 20003000448. Its totient is φ = 20003000446.

The previous prime is 20003000429. The next prime is 20003000453. The reversal of 20003000447 is 74400030002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20003000447 - 2⁶ = 20003000383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20003000467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001500223 + 10001500224.

It is an arithmetic number, because the mean of its divisors is an integer number (10001500224).

Almost surely, 2^20003000447 is an apocalyptic number.

20003000447 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003000447 is an equidigital number, since it uses as much as digits as its factorization.

20003000447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 20.

Adding to 20003000447 its reverse (74400030002), we get a palindrome (94403030449).

The spelling of 20003000447 in words is "twenty billion, three million, four hundred forty-seven", and thus it is an aban number.