838471666717 has 8 divisors (see below), whose sum is σ = 838933539840. Its totient is φ = 838009890480.

The previous prime is 838471666649. The next prime is 838471666723. The reversal of 838471666717 is 717666174838.

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 838471666717 - 2¹⁵ = 838471633949 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 (838471666217) 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, 23027508 + ... + 23063890.

It is an arithmetic number, because the mean of its divisors is an integer number (104866692480).

Almost surely, 2^838471666717 is an apocalyptic number.

It is an amenable number.

838471666717 is a deficient number, since it is larger than the sum of its proper divisors (461873123).

838471666717 is a wasteful number, since it uses less digits than its factorization.

838471666717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48443.

The product of its digits is 56899584, while the sum is 64.

The spelling of 838471666717 in words is "eight hundred thirty-eight billion, four hundred seventy-one million, six hundred sixty-six thousand, seven hundred seventeen".