20455016563043 has 2 divisors, whose sum is σ = 20455016563044. Its totient is φ = 20455016563042.

The previous prime is 20455016563031. The next prime is 20455016563063. The reversal of 20455016563043 is 34036561055402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20455016563043 - 2⁴ = 20455016563027 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20455016562985 and 20455016563003.

It is not a weakly prime, because it can be changed into another prime (20455016563063) 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, 10227508281521 + 10227508281522.

It is an arithmetic number, because the mean of its divisors is an integer number (10227508281522).

Almost surely, 2^{20455016563043} is an apocalyptic number.

20455016563043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20455016563043 is an equidigital number, since it uses as much as digits as its factorization.

20455016563043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 20455016563043 in words is "twenty trillion, four hundred fifty-five billion, sixteen million, five hundred sixty-three thousand, forty-three".