423330320440 has 16 divisors (see below), whose sum is σ = 952493221080. Its totient is φ = 169332128160.

The previous prime is 423330320431. The next prime is 423330320471. The reversal of 423330320440 is 44023033324.

It is a junction number, because it is equal to n+sod(n) for n = 423330320399 and 423330320408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5291628966 + ... + 5291629045.

Almost surely, 2^423330320440 is an apocalyptic number.

423330320440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423330320440 is an abundant number, since it is smaller than the sum of its proper divisors (529162900640).

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

423330320440 is a wasteful number, since it uses less digits than its factorization.

423330320440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10583258022 (or 10583258018 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 423330320440 its reverse (44023033324), we get a palindrome (467353353764).

The spelling of 423330320440 in words is "four hundred twenty-three billion, three hundred thirty million, three hundred twenty thousand, four hundred forty".