10020543454541 has 2 divisors, whose sum is σ = 10020543454542. Its totient is φ = 10020543454540.

The previous prime is 10020543454529. The next prime is 10020543454543. The reversal of 10020543454541 is 14545434502001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9656245502500 + 364297952041 = 3107450^2 + 603571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10020543454541 is a prime.

It is a super-2 number, since 2×10020543454541² (a number of 27 digits) contains 22 as substring.

Together with 10020543454543, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10020543454495 and 10020543454504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10020543454543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010271727270 + 5010271727271.

It is an arithmetic number, because the mean of its divisors is an integer number (5010271727271).

Almost surely, 2^{10020543454541} is an apocalyptic number.

It is an amenable number.

10020543454541 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020543454541 is an equidigital number, since it uses as much as digits as its factorization.

10020543454541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 10020543454541 its reverse (14545434502001), we get a palindrome (24565977956542).

The spelling of 10020543454541 in words is "ten trillion, twenty billion, five hundred forty-three million, four hundred fifty-four thousand, five hundred forty-one".