423904915456 has 208 divisors, whose sum is σ = 991915683840. Its totient is φ = 179079413760.

The previous prime is 423904915451. The next prime is 423904915463. The reversal of 423904915456 is 654519409324.

It is a happy number.

It is a super-3 number, since 3×423904915456³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (423904915451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45366721 + ... + 45376063.

Almost surely, 2^423904915456 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 423904915456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495957841920).

423904915456 is an abundant number, since it is smaller than the sum of its proper divisors (568010768384).

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

423904915456 is a wasteful number, since it uses less digits than its factorization.

423904915456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9450 (or 9428 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 423904915456 in words is "four hundred twenty-three billion, nine hundred four million, nine hundred fifteen thousand, four hundred fifty-six".