42668218843 has 4 divisors (see below), whose sum is σ = 42703747288. Its totient is φ = 42632690400.

The previous prime is 42668218823. The next prime is 42668218847. The reversal of 42668218843 is 34881286624.

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

It is a cyclic number.

It is not a de Polignac number, because 42668218843 - 2¹⁷ = 42668087771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42668218847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17762421 + ... + 17764822.

It is an arithmetic number, because the mean of its divisors is an integer number (10675936822).

Almost surely, 2^42668218843 is an apocalyptic number.

42668218843 is a deficient number, since it is larger than the sum of its proper divisors (35528445).

42668218843 is a wasteful number, since it uses less digits than its factorization.

42668218843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35528444.

The product of its digits is 3538944, while the sum is 52.

The spelling of 42668218843 in words is "forty-two billion, six hundred sixty-eight million, two hundred eighteen thousand, eight hundred forty-three".