20210020984847 has 2 divisors, whose sum is σ = 20210020984848. Its totient is φ = 20210020984846.

The previous prime is 20210020984843. The next prime is 20210020984873. The reversal of 20210020984847 is 74848902001202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20210020984847 - 2² = 20210020984843 is a prime.

It is a super-2 number, since 2×20210020984847² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20210020984843) 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, 10105010492423 + 10105010492424.

It is an arithmetic number, because the mean of its divisors is an integer number (10105010492424).

Almost surely, 2^{20210020984847} is an apocalyptic number.

20210020984847 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210020984847 is an equidigital number, since it uses as much as digits as its factorization.

20210020984847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 20210020984847 in words is "twenty trillion, two hundred ten billion, twenty million, nine hundred eighty-four thousand, eight hundred forty-seven".