42176817217 has 4 divisors (see below), whose sum is σ = 42203462400. Its totient is φ = 42150172036.

The previous prime is 42176817191. The next prime is 42176817227. The reversal of 42176817217 is 71271867124.

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 a cyclic number.

It is not a de Polignac number, because 42176817217 - 2³⁵ = 7817078849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42176817227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13320217 + ... + 13323382.

It is an arithmetic number, because the mean of its divisors is an integer number (10550865600).

Almost surely, 2^42176817217 is an apocalyptic number.

It is an amenable number.

42176817217 is a deficient number, since it is larger than the sum of its proper divisors (26645183).

42176817217 is a wasteful number, since it uses less digits than its factorization.

42176817217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26645182.

The product of its digits is 263424, while the sum is 46.

The spelling of 42176817217 in words is "forty-two billion, one hundred seventy-six million, eight hundred seventeen thousand, two hundred seventeen".