10020543454543 has 2 divisors, whose sum is σ = 10020543454544. Its totient is φ = 10020543454542.

The previous prime is 10020543454541. The next prime is 10020543454547. The reversal of 10020543454543 is 34545434502001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10020543454543 - 2¹ = 10020543454541 is a prime.

It is a super-2 number, since 2×10020543454543² (a number of 27 digits) contains 22 as substring.

Together with 10020543454541, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10020543454496 and 10020543454505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10020543454541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010271727271 + 5010271727272.

It is an arithmetic number, because the mean of its divisors is an integer number (5010271727272).

Almost surely, 2^{10020543454543} is an apocalyptic number.

10020543454543 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020543454543 is an equidigital number, since it uses as much as digits as its factorization.

10020543454543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576000, while the sum is 40.

Adding to 10020543454543 its reverse (34545434502001), we get a palindrome (44565977956544).

The spelling of 10020543454543 in words is "ten trillion, twenty billion, five hundred forty-three million, four hundred fifty-four thousand, five hundred forty-three".