20010020347 has 2 divisors, whose sum is σ = 20010020348. Its totient is φ = 20010020346.

The previous prime is 20010020281. The next prime is 20010020351. The reversal of 20010020347 is 74302001002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20010020347 is a prime.

It is not a weakly prime, because it can be changed into another prime (20010020377) 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, 10005010173 + 10005010174.

It is an arithmetic number, because the mean of its divisors is an integer number (10005010174).

Almost surely, 2^20010020347 is an apocalyptic number.

20010020347 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010020347 is an equidigital number, since it uses as much as digits as its factorization.

20010020347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

Adding to 20010020347 its reverse (74302001002), we get a palindrome (94312021349).

The spelling of 20010020347 in words is "twenty billion, ten million, twenty thousand, three hundred forty-seven".