423423166320 has 480 divisors, whose sum is σ = 1820802746880. Its totient is φ = 85605672960.

The previous prime is 423423166307. The next prime is 423423166339. The reversal of 423423166320 is 23661324324.

423423166320 is a `hidden beast` number, since 4 + 2 + 3 + 4 + 2 + 3 + 16 + 632 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1948071 + ... + 2154489.

It is an arithmetic number, because the mean of its divisors is an integer number (3793339056).

Almost surely, 2^423423166320 is an apocalyptic number.

423423166320 is a gapful number since it is divisible by the number (40) 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 423423166320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (910401373440).

423423166320 is an abundant number, since it is smaller than the sum of its proper divisors (1397379580560).

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

423423166320 is a wasteful number, since it uses less digits than its factorization.

423423166320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206493 (or 206484 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The spelling of 423423166320 in words is "four hundred twenty-three billion, four hundred twenty-three million, one hundred sixty-six thousand, three hundred twenty".