78442417873 has 8 divisors (see below), whose sum is σ = 79146562176. Its totient is φ = 77739870000.

The previous prime is 78442417829. The next prime is 78442417883. The reversal of 78442417873 is 37871424487.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78442417873 - 2²⁵ = 78408863441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78442417813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300286 + ... + 497047.

It is an arithmetic number, because the mean of its divisors is an integer number (9893320272).

Almost surely, 2^78442417873 is an apocalyptic number.

It is an amenable number.

78442417873 is a deficient number, since it is larger than the sum of its proper divisors (704144303).

78442417873 is a wasteful number, since it uses less digits than its factorization.

78442417873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798215.

The product of its digits is 8429568, while the sum is 55.

The spelling of 78442417873 in words is "seventy-eight billion, four hundred forty-two million, four hundred seventeen thousand, eight hundred seventy-three".