42554563633 has 2 divisors, whose sum is σ = 42554563634. Its totient is φ = 42554563632.

The previous prime is 42554563589. The next prime is 42554563697. The reversal of 42554563633 is 33636545524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34057964304 + 8496599329 = 184548^2 + 92177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42554563633 is a prime.

It is not a weakly prime, because it can be changed into another prime (42554563033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21277281816 + 21277281817.

It is an arithmetic number, because the mean of its divisors is an integer number (21277281817).

Almost surely, 2^42554563633 is an apocalyptic number.

It is an amenable number.

42554563633 is a deficient number, since it is larger than the sum of its proper divisors (1).

42554563633 is an equidigital number, since it uses as much as digits as its factorization.

42554563633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888000, while the sum is 46.

The spelling of 42554563633 in words is "forty-two billion, five hundred fifty-four million, five hundred sixty-three thousand, six hundred thirty-three".