20020010947 has 2 divisors, whose sum is σ = 20020010948. Its totient is φ = 20020010946.

The previous prime is 20020010929. The next prime is 20020010963. The reversal of 20020010947 is 74901002002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020010947 is a prime.

It is not a weakly prime, because it can be changed into another prime (20020010147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010005473 + 10010005474.

It is an arithmetic number, because the mean of its divisors is an integer number (10010005474).

Almost surely, 2^20020010947 is an apocalyptic number.

20020010947 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020010947 is an equidigital number, since it uses as much as digits as its factorization.

20020010947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 20020010947 its reverse (74901002002), we get a palindrome (94921012949).

The spelling of 20020010947 in words is "twenty billion, twenty million, ten thousand, nine hundred forty-seven".