12821548828 has 48 divisors (see below), whose sum is σ = 24754802688. Its totient is φ = 5762120000.

The previous prime is 12821548781. The next prime is 12821548837. The reversal of 12821548828 is 82884512821.

It is a super-2 number, since 2×12821548828² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4046901 + ... + 4050067.

It is an arithmetic number, because the mean of its divisors is an integer number (515725056).

Almost surely, 2^12821548828 is an apocalyptic number.

It is an amenable number.

12821548828 is a deficient number, since it is larger than the sum of its proper divisors (11933253860).

12821548828 is a wasteful number, since it uses less digits than its factorization.

12821548828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194 (or 4192 counting only the distinct ones).

The product of its digits is 655360, while the sum is 49.

The spelling of 12821548828 in words is "twelve billion, eight hundred twenty-one million, five hundred forty-eight thousand, eight hundred twenty-eight".