10821280668 has 24 divisors (see below), whose sum is σ = 27545078400. Its totient is φ = 3279175920.

The previous prime is 10821280667. The next prime is 10821280669. The reversal of 10821280668 is 86608212801.

It is an interprime number because it is at equal distance from previous prime (10821280667) and next prime (10821280669).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10821280663) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 40989568 + ... + 40989831.

It is an arithmetic number, because the mean of its divisors is an integer number (1147711600).

Almost surely, 2^10821280668 is an apocalyptic number.

It is an amenable number.

10821280668 is an abundant number, since it is smaller than the sum of its proper divisors (16723797732).

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

10821280668 is a wasteful number, since it uses less digits than its factorization.

10821280668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81979417 (or 81979415 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The spelling of 10821280668 in words is "ten billion, eight hundred twenty-one million, two hundred eighty thousand, six hundred sixty-eight".