423913367808 has 648 divisors, whose sum is σ = 1498302396864. Its totient is φ = 117095362560.

The previous prime is 423913367767. The next prime is 423913367821. The reversal of 423913367808 is 808763319324.

423913367808 is a `hidden beast` number, since 4 + 239 + 1 + 336 + 78 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (648).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 418472710 + ... + 418473722.

Almost surely, 2^423913367808 is an apocalyptic number.

423913367808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423913367808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749151198432).

423913367808 is an abundant number, since it is smaller than the sum of its proper divisors (1074389029056).

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

423913367808 is an equidigital number, since it uses as much as digits as its factorization.

423913367808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 423913367808 in words is "four hundred twenty-three billion, nine hundred thirteen million, three hundred sixty-seven thousand, eight hundred eight".