423913578624 has 256 divisors, whose sum is σ = 1276670678400. Its totient is φ = 138428559360.

The previous prime is 423913578617. The next prime is 423913578629. The reversal of 423913578624 is 426875319324.

423913578624 is a `hidden beast` number, since 4 + 2 + 3 + 9 + 1 + 3 + 5 + 7 + 8 + 624 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (423913578629) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 161736034 + ... + 161738654.

Almost surely, 2^423913578624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423913578624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (638335339200).

423913578624 is an abundant number, since it is smaller than the sum of its proper divisors (852757099776).

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

423913578624 is a wasteful number, since it uses less digits than its factorization.

423913578624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580 (or 3562 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 423913578624 in words is "four hundred twenty-three billion, nine hundred thirteen million, five hundred seventy-eight thousand, six hundred twenty-four".