10855121728 has 28 divisors (see below), whose sum is σ = 23498872992. Its totient is φ = 4934145920.

The previous prime is 10855121671. The next prime is 10855121731. The reversal of 10855121728 is 82712155801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7708900 + ... + 7710307.

It is an arithmetic number, because the mean of its divisors is an integer number (839245464).

Almost surely, 2^10855121728 is an apocalyptic number.

It is an amenable number.

10855121728 is an abundant number, since it is smaller than the sum of its proper divisors (12643751264).

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

10855121728 is a wasteful number, since it uses less digits than its factorization.

10855121728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15419230 (or 15419220 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 40.

The spelling of 10855121728 in words is "ten billion, eight hundred fifty-five million, one hundred twenty-one thousand, seven hundred twenty-eight".