423171719917 has 12 divisors (see below), whose sum is σ = 438669687456. Its totient is φ = 408204206480.

The previous prime is 423171719897. The next prime is 423171719939. The reversal of 423171719917 is 719917171324.

It is not a de Polignac number, because 423171719917 - 2¹¹ = 423171717869 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 (423171719017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 686928 + ... + 1148134.

It is an arithmetic number, because the mean of its divisors is an integer number (36555807288).

Almost surely, 2^423171719917 is an apocalyptic number.

It is an amenable number.

423171719917 is a deficient number, since it is larger than the sum of its proper divisors (15497967539).

423171719917 is a wasteful number, since it uses less digits than its factorization.

423171719917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462356 (or 462327 counting only the distinct ones).

The product of its digits is 666792, while the sum is 52.

The spelling of 423171719917 in words is "four hundred twenty-three billion, one hundred seventy-one million, seven hundred nineteen thousand, nine hundred seventeen".