42674131618 has 4 divisors (see below), whose sum is σ = 64011197430. Its totient is φ = 21337065808.

The previous prime is 42674131607. The next prime is 42674131693. The reversal of 42674131618 is 81613147624.

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

It can be written as a sum of positive squares in only one way, i.e., 42044272209 + 629859409 = 205047^2 + 25097^2 .

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 as a sum of consecutive naturals, namely, 10668532903 + ... + 10668532906.

Almost surely, 2^42674131618 is an apocalyptic number.

42674131618 is a deficient number, since it is larger than the sum of its proper divisors (21337065812).

42674131618 is a wasteful number, since it uses less digits than its factorization.

42674131618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21337065811.

The product of its digits is 193536, while the sum is 43.

The spelling of 42674131618 in words is "forty-two billion, six hundred seventy-four million, one hundred thirty-one thousand, six hundred eighteen".