423508538500 has 24 divisors (see below), whose sum is σ = 924942649176. Its totient is φ = 169403415200.

The previous prime is 423508538471. The next prime is 423508538513. The reversal of 423508538500 is 5835805324.

It can be written as a sum of positive squares in 4 ways, for example, as 43303112836 + 380205425664 = 208094^2 + 616608^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 423508039 + ... + 423509038.

It is an arithmetic number, because the mean of its divisors is an integer number (38539277049).

Almost surely, 2^423508538500 is an apocalyptic number.

It is an amenable number.

423508538500 is an abundant number, since it is smaller than the sum of its proper divisors (501434110676).

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

423508538500 is a wasteful number, since it uses less digits than its factorization.

423508538500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847017096 (or 847017084 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 423508538500 in words is "four hundred twenty-three billion, five hundred eight million, five hundred thirty-eight thousand, five hundred".