423855517668 has 24 divisors (see below), whose sum is σ = 1078904954400. Its totient is φ = 128441065920.

The previous prime is 423855517663. The next prime is 423855517681. The reversal of 423855517668 is 866715558324.

It is not an unprimeable number, because it can be changed into a prime (423855517663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1605513193 + ... + 1605513456.

It is an arithmetic number, because the mean of its divisors is an integer number (44954373100).

Almost surely, 2^423855517668 is an apocalyptic number.

It is an amenable number.

423855517668 is an abundant number, since it is smaller than the sum of its proper divisors (655049436732).

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

423855517668 is a wasteful number, since it uses less digits than its factorization.

423855517668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211026667 (or 3211026665 counting only the distinct ones).

The product of its digits is 48384000, while the sum is 60.

The spelling of 423855517668 in words is "four hundred twenty-three billion, eight hundred fifty-five million, five hundred seventeen thousand, six hundred sixty-eight".