423717197922 has 18 divisors (see below), whose sum is σ = 918059912523. Its totient is φ = 141238145412.

The previous prime is 423717197899. The next prime is 423717197933. The reversal of 423717197922 is 229791717324.

423717197922 is a `hidden beast` number, since 423 + 7 + 1 + 7 + 197 + 9 + 22 = 666.

It can be written as a sum of positive squares in only one way, i.e., 211858598961 + 211858598961 = 460281^2 + 460281^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=460281.

It is a super-2 number, since 2×423717197922² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 2684973 + ... + 2838399.

Almost surely, 2^423717197922 is an apocalyptic number.

423717197922 is an abundant number, since it is smaller than the sum of its proper divisors (494342714601).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423717197922 is an frugal number, since it uses more digits than its factorization.

423717197922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306862 (or 153432 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The spelling of 423717197922 in words is "four hundred twenty-three billion, seven hundred seventeen million, one hundred ninety-seven thousand, nine hundred twenty-two".