12818545872 has 80 divisors (see below), whose sum is σ = 36162298560. Its totient is φ = 3880396800.

The previous prime is 12818545823. The next prime is 12818545877. The reversal of 12818545872 is 27854581821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12818545877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520722 + ... + 544782.

It is an arithmetic number, because the mean of its divisors is an integer number (452028732).

Almost surely, 2^12818545872 is an apocalyptic number.

12818545872 is a gapful number since it is divisible by the number (12) 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 12818545872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18081149280).

12818545872 is an abundant number, since it is smaller than the sum of its proper divisors (23343752688).

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

12818545872 is a wasteful number, since it uses less digits than its factorization.

12818545872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25092 (or 25086 counting only the distinct ones).

The product of its digits is 1433600, while the sum is 51.

The spelling of 12818545872 in words is "twelve billion, eight hundred eighteen million, five hundred forty-five thousand, eight hundred seventy-two".