20002406947 has 2 divisors, whose sum is σ = 20002406948. Its totient is φ = 20002406946.

The previous prime is 20002406927. The next prime is 20002407001. The reversal of 20002406947 is 74960420002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20002406947 - 2¹¹ = 20002404899 is a prime.

It is not a weakly prime, because it can be changed into another prime (20002406917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001203473 + 10001203474.

It is an arithmetic number, because the mean of its divisors is an integer number (10001203474).

Almost surely, 2^20002406947 is an apocalyptic number.

20002406947 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002406947 is an equidigital number, since it uses as much as digits as its factorization.

20002406947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

Adding to 20002406947 its reverse (74960420002), we get a palindrome (94962826949).

The spelling of 20002406947 in words is "twenty billion, two million, four hundred six thousand, nine hundred forty-seven".