42181797508 has 12 divisors (see below), whose sum is σ = 77027630400. Its totient is φ = 20173903112.

The previous prime is 42181797499. The next prime is 42181797521. The reversal of 42181797508 is 80579718124.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229248808 + ... + 229248991.

It is an arithmetic number, because the mean of its divisors is an integer number (6418969200).

Almost surely, 2^42181797508 is an apocalyptic number.

It is an amenable number.

42181797508 is a deficient number, since it is larger than the sum of its proper divisors (34845832892).

42181797508 is a wasteful number, since it uses less digits than its factorization.

42181797508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458497826 (or 458497824 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 52.

The spelling of 42181797508 in words is "forty-two billion, one hundred eighty-one million, seven hundred ninety-seven thousand, five hundred eight".