10921170568 has 144 divisors (see below), whose sum is σ = 26340487740. Its totient is φ = 4229406720.

The previous prime is 10921170553. The next prime is 10921170613. The reversal of 10921170568 is 86507112901.

It is a happy number.

10921170568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10741664164 + 179506404 = 103642^2 + 13398^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10921170568.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9153780 + ... + 9154972.

Almost surely, 2^10921170568 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 10921170568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13170243870).

10921170568 is an abundant number, since it is smaller than the sum of its proper divisors (15419317172).

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

10921170568 is a wasteful number, since it uses less digits than its factorization.

10921170568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1406 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 40.

The spelling of 10921170568 in words is "ten billion, nine hundred twenty-one million, one hundred seventy thousand, five hundred sixty-eight".