423529067520 has 880 divisors, whose sum is σ = 1730951682768. Its totient is φ = 98099527680.

The previous prime is 423529067497. The next prime is 423529067573. The reversal of 423529067520 is 25760925324.

423529067520 is a `hidden beast` number, since 4 + 2 + 35 + 2 + 90 + 6 + 7 + 520 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 14010983424 + 409518084096 = 118368^2 + 639936^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 91650810 + ... + 91655430.

Almost surely, 2^423529067520 is an apocalyptic number.

423529067520 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 423529067520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (865475841384).

423529067520 is an abundant number, since it is smaller than the sum of its proper divisors (1307422615248).

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

423529067520 is a wasteful number, since it uses less digits than its factorization.

423529067520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4688 (or 4661 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 423529067520 in words is "four hundred twenty-three billion, five hundred twenty-nine million, sixty-seven thousand, five hundred twenty".