42991560558 has 24 divisors (see below), whose sum is σ = 93153257496. Its totient is φ = 14329770000.

The previous prime is 42991560533. The next prime is 42991560569. The reversal of 42991560558 is 85506519924.

42991560558 is a `hidden beast` number, since 4 + 29 + 9 + 1 + 5 + 60 + 558 = 666.

It is a super-3 number, since 3×42991560558³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 372808 + ... + 474308.

It is an arithmetic number, because the mean of its divisors is an integer number (3881385729).

Almost surely, 2^42991560558 is an apocalyptic number.

42991560558 is an abundant number, since it is smaller than the sum of its proper divisors (50161696938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42991560558 is a wasteful number, since it uses less digits than its factorization.

42991560558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125040 (or 125037 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 54.

The spelling of 42991560558 in words is "forty-two billion, nine hundred ninety-one million, five hundred sixty thousand, five hundred fifty-eight".