20012333447 has 2 divisors, whose sum is σ = 20012333448. Its totient is φ = 20012333446.

The previous prime is 20012333389. The next prime is 20012333489. The reversal of 20012333447 is 74433321002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012333447 - 2²⁸ = 19743897991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012333147) 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, 10006166723 + 10006166724.

It is an arithmetic number, because the mean of its divisors is an integer number (10006166724).

Almost surely, 2^20012333447 is an apocalyptic number.

20012333447 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012333447 is an equidigital number, since it uses as much as digits as its factorization.

20012333447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 29.

Adding to 20012333447 its reverse (74433321002), we get a palindrome (94445654449).

The spelling of 20012333447 in words is "twenty billion, twelve million, three hundred thirty-three thousand, four hundred forty-seven".