10665256728 has 64 divisors (see below), whose sum is σ = 30751776000. Its totient is φ = 3019254912.

The previous prime is 10665256687. The next prime is 10665256747. The reversal of 10665256728 is 82765256601.

It is a happy number.

It is a super-2 number, since 2×10665256728² (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, 272898 + ... + 309521.

It is an arithmetic number, because the mean of its divisors is an integer number (480496500).

Almost surely, 2^10665256728 is an apocalyptic number.

It is an amenable number.

10665256728 is an abundant number, since it is smaller than the sum of its proper divisors (20086519272).

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

10665256728 is a wasteful number, since it uses less digits than its factorization.

10665256728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582544 (or 582540 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 10665256728 in words is "ten billion, six hundred sixty-five million, two hundred fifty-six thousand, seven hundred twenty-eight".