423873915136 has 81 divisors (see below), whose sum is σ = 984398898441. Its totient is φ = 181628998656.

The previous prime is 423873915119. The next prime is 423873915161. The reversal of 423873915136 is 631519378324.

The square root of 423873915136 is 651056.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 294458169600 + 129415745536 = 542640^2 + 359744^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 72915366 + ... + 72921178.

Almost surely, 2^423873915136 is an apocalyptic number.

423873915136 is the 651056-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423873915136

423873915136 is an abundant number, since it is smaller than the sum of its proper divisors (560524983305).

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

423873915136 is an frugal number, since it uses more digits than its factorization.

423873915136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11656 (or 5822 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 52.

The spelling of 423873915136 in words is "four hundred twenty-three billion, eight hundred seventy-three million, nine hundred fifteen thousand, one hundred thirty-six".