20516220462223 has 2 divisors, whose sum is σ = 20516220462224. Its totient is φ = 20516220462222.

The previous prime is 20516220462191. The next prime is 20516220462313. The reversal of 20516220462223 is 32226402261502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20516220462223 - 2⁵ = 20516220462191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20516220462623) 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, 10258110231111 + 10258110231112.

It is an arithmetic number, because the mean of its divisors is an integer number (10258110231112).

Almost surely, 2^{20516220462223} is an apocalyptic number.

20516220462223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20516220462223 is an equidigital number, since it uses as much as digits as its factorization.

20516220462223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 20516220462223 in words is "twenty trillion, five hundred sixteen billion, two hundred twenty million, four hundred sixty-two thousand, two hundred twenty-three".