20846452859473 has 2 divisors, whose sum is σ = 20846452859474. Its totient is φ = 20846452859472.

The previous prime is 20846452859443. The next prime is 20846452859509. The reversal of 20846452859473 is 37495825464802.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20846420060944 + 32798529 = 4565788^2 + 5727^2 .

It is a cyclic number.

It is not a de Polignac number, because 20846452859473 - 2¹³ = 20846452851281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20846452859399 and 20846452859408.

It is not a weakly prime, because it can be changed into another prime (20846452859443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10423226429736 + 10423226429737.

It is an arithmetic number, because the mean of its divisors is an integer number (10423226429737).

Almost surely, 2^{20846452859473} is an apocalyptic number.

It is an amenable number.

20846452859473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20846452859473 is an equidigital number, since it uses as much as digits as its factorization.

20846452859473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 464486400, while the sum is 67.

The spelling of 20846452859473 in words is "twenty trillion, eight hundred forty-six billion, four hundred fifty-two million, eight hundred fifty-nine thousand, four hundred seventy-three".