42549478559 has 16 divisors (see below), whose sum is σ = 50260396608. Its totient is φ = 35259224832.

The previous prime is 42549478523. The next prime is 42549478583. The reversal of 42549478559 is 95587494524.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42549478559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42549478589) 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 in 15 ways as a sum of consecutive naturals, for example, 482534 + ... + 563859.

It is an arithmetic number, because the mean of its divisors is an integer number (3141274788).

Almost surely, 2^42549478559 is an apocalyptic number.

42549478559 is a deficient number, since it is larger than the sum of its proper divisors (7710918049).

42549478559 is a wasteful number, since it uses less digits than its factorization.

42549478559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046594.

The product of its digits is 72576000, while the sum is 62.

The spelling of 42549478559 in words is "forty-two billion, five hundred forty-nine million, four hundred seventy-eight thousand, five hundred fifty-nine".