12816005000 has 60 divisors (see below), whose sum is σ = 30046667145. Its totient is φ = 5123200000.

The previous prime is 12816004997. The next prime is 12816005021. The reversal of 12816005000 is 50061821.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 8 ways, for example, as 2440952836 + 10375052164 = 49406^2 + 101858^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=80050.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 8004200 + ... + 8005800.

Almost surely, 2^12816005000 is an apocalyptic number.

12816005000 is a gapful number since it is divisible by the number (10) 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 12816005000

12816005000 is an abundant number, since it is smaller than the sum of its proper divisors (17230662145).

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

12816005000 is an frugal number, since it uses more digits than its factorization.

12816005000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3228 (or 1608 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 12816005000 its reverse (50061821), we get a palindrome (12866066821).

The spelling of 12816005000 in words is "twelve billion, eight hundred sixteen million, five thousand".