42554444445571 has 2 divisors, whose sum is σ = 42554444445572. Its totient is φ = 42554444445570.

The previous prime is 42554444445449. The next prime is 42554444445647. The reversal of 42554444445571 is 17554444445524.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42554444445571 is a prime.

It is not a weakly prime, because it can be changed into another prime (42554444445671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21277222222785 + 21277222222786.

It is an arithmetic number, because the mean of its divisors is an integer number (21277222222786).

Almost surely, 2^{42554444445571} is an apocalyptic number.

42554444445571 is a deficient number, since it is larger than the sum of its proper divisors (1).

42554444445571 is an equidigital number, since it uses as much as digits as its factorization.

42554444445571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 143360000, while the sum is 58.

The spelling of 42554444445571 in words is "forty-two trillion, five hundred fifty-four billion, four hundred forty-four million, four hundred forty-five thousand, five hundred seventy-one".