20455511541239 has 2 divisors, whose sum is σ = 20455511541240. Its totient is φ = 20455511541238.

The previous prime is 20455511541181. The next prime is 20455511541287. The reversal of 20455511541239 is 93214511555402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20455511541239 - 2¹² = 20455511537143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20455511541193 and 20455511541202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20455511541739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10227755770619 + 10227755770620.

It is an arithmetic number, because the mean of its divisors is an integer number (10227755770620).

Almost surely, 2^{20455511541239} is an apocalyptic number.

20455511541239 is a deficient number, since it is larger than the sum of its proper divisors (1).

20455511541239 is an equidigital number, since it uses as much as digits as its factorization.

20455511541239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080000, while the sum is 47.

The spelling of 20455511541239 in words is "twenty trillion, four hundred fifty-five billion, five hundred eleven million, five hundred forty-one thousand, two hundred thirty-nine".