421758416717 has 8 divisors (see below), whose sum is σ = 460122680640. Its totient is φ = 383397917760.

The previous prime is 421758416713. The next prime is 421758416731. The reversal of 421758416717 is 717614857124.

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

It is not a de Polignac number, because 421758416717 - 2² = 421758416713 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 (421758416713) 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 7 ways as a sum of consecutive naturals, for example, 704417 + ... + 1157462.

It is an arithmetic number, because the mean of its divisors is an integer number (57515335080).

Almost surely, 2^421758416717 is an apocalyptic number.

It is an amenable number.

421758416717 is a deficient number, since it is larger than the sum of its proper divisors (38364263923).

421758416717 is a wasteful number, since it uses less digits than its factorization.

421758416717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882483.

The product of its digits is 2634240, while the sum is 53.

The spelling of 421758416717 in words is "four hundred twenty-one billion, seven hundred fifty-eight million, four hundred sixteen thousand, seven hundred seventeen".