20534411454643 has 2 divisors, whose sum is σ = 20534411454644. Its totient is φ = 20534411454642.

The previous prime is 20534411454577. The next prime is 20534411454707. The reversal of 20534411454643 is 34645411443502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20534411454643 - 2²¹ = 20534409357491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20534411454593 and 20534411454602.

It is not a weakly prime, because it can be changed into another prime (20534411494643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10267205727321 + 10267205727322.

It is an arithmetic number, because the mean of its divisors is an integer number (10267205727322).

Almost surely, 2^{20534411454643} is an apocalyptic number.

20534411454643 is a deficient number, since it is larger than the sum of its proper divisors (1).

20534411454643 is an equidigital number, since it uses as much as digits as its factorization.

20534411454643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2764800, while the sum is 46.

The spelling of 20534411454643 in words is "twenty trillion, five hundred thirty-four billion, four hundred eleven million, four hundred fifty-four thousand, six hundred forty-three".