42440181717 has 4 divisors (see below), whose sum is σ = 56586908960. Its totient is φ = 28293454476.

The previous prime is 42440181713. The next prime is 42440181727. The reversal of 42440181717 is 71718104424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42440181717 - 2² = 42440181713 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440181713) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7073363617 + ... + 7073363622.

It is an arithmetic number, because the mean of its divisors is an integer number (14146727240).

Almost surely, 2^42440181717 is an apocalyptic number.

It is an amenable number.

42440181717 is a deficient number, since it is larger than the sum of its proper divisors (14146727243).

42440181717 is a wasteful number, since it uses less digits than its factorization.

42440181717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14146727242.

The product of its (nonzero) digits is 50176, while the sum is 39.

The spelling of 42440181717 in words is "forty-two billion, four hundred forty million, one hundred eighty-one thousand, seven hundred seventeen".