12804636460 has 96 divisors (see below), whose sum is σ = 33573915648. Its totient is φ = 3985217280.

The previous prime is 12804636437. The next prime is 12804636473. The reversal of 12804636460 is 6463640821.

It is a super-2 number, since 2×12804636460² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1113862 + ... + 1125298.

It is an arithmetic number, because the mean of its divisors is an integer number (349728288).

Almost surely, 2^12804636460 is an apocalyptic number.

12804636460 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 12804636460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16786957824).

12804636460 is an abundant number, since it is smaller than the sum of its proper divisors (20769279188).

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

12804636460 is a wasteful number, since it uses less digits than its factorization.

12804636460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12191 (or 12189 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 12804636460 in words is "twelve billion, eight hundred four million, six hundred thirty-six thousand, four hundred sixty".