10821544412 has 48 divisors (see below), whose sum is σ = 22950744768. Its totient is φ = 4358415360.

The previous prime is 10821544381. The next prime is 10821544421. The reversal of 10821544412 is 21444512801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305462 + ... + 339042.

It is an arithmetic number, because the mean of its divisors is an integer number (478140516).

Almost surely, 2^10821544412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10821544412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11475372384).

10821544412 is an abundant number, since it is smaller than the sum of its proper divisors (12129200356).

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

10821544412 is a wasteful number, since it uses less digits than its factorization.

10821544412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34286 (or 34284 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The spelling of 10821544412 in words is "ten billion, eight hundred twenty-one million, five hundred forty-four thousand, four hundred twelve".