42558384185 has 4 divisors (see below), whose sum is σ = 51070061028. Its totient is φ = 34046707344.

The previous prime is 42558384151. The next prime is 42558384191. The reversal of 42558384185 is 58148385524.

It is a happy number.

42558384185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15204862864 + 27353521321 = 123308^2 + 165389^2 .

It is a cyclic number.

It is not a de Polignac number, because 42558384185 - 2¹² = 42558380089 is a prime.

It is a super-2 number, since 2×42558384185² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

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, 4255838414 + ... + 4255838423.

It is an arithmetic number, because the mean of its divisors is an integer number (12767515257).

Almost surely, 2^42558384185 is an apocalyptic number.

It is an amenable number.

42558384185 is a deficient number, since it is larger than the sum of its proper divisors (8511676843).

42558384185 is an equidigital number, since it uses as much as digits as its factorization.

42558384185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8511676842.

The product of its digits is 6144000, while the sum is 53.

The spelling of 42558384185 in words is "forty-two billion, five hundred fifty-eight million, three hundred eighty-four thousand, one hundred eighty-five".