20084349171643 has 2 divisors, whose sum is σ = 20084349171644. Its totient is φ = 20084349171642.

The previous prime is 20084349171641. The next prime is 20084349171647. The reversal of 20084349171643 is 34617194348002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20084349171643 - 2¹ = 20084349171641 is a prime.

Together with 20084349171641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20084349171641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10042174585821 + 10042174585822.

It is an arithmetic number, because the mean of its divisors is an integer number (10042174585822).

Almost surely, 2^{20084349171643} is an apocalyptic number.

20084349171643 is a deficient number, since it is larger than the sum of its proper divisors (1).

20084349171643 is an equidigital number, since it uses as much as digits as its factorization.

20084349171643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 20084349171643 in words is "twenty trillion, eighty-four billion, three hundred forty-nine million, one hundred seventy-one thousand, six hundred forty-three".