4566728121728 has 64 divisors (see below), whose sum is σ = 9681841224000. Its totient is φ = 2138139451392.

The previous prime is 4566728121691. The next prime is 4566728121841. The reversal of 4566728121728 is 8271218276654.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 4897928 + ... + 5755271.

It is an arithmetic number, because the mean of its divisors is an integer number (151278769125).

Almost surely, 2^{4566728121728} is an apocalyptic number.

It is an amenable number.

4566728121728 is an abundant number, since it is smaller than the sum of its proper divisors (5115113102272).

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

4566728121728 is a wasteful number, since it uses less digits than its factorization.

4566728121728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10653427 (or 10653415 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 59.

The spelling of 4566728121728 in words is "four trillion, five hundred sixty-six billion, seven hundred twenty-eight million, one hundred twenty-one thousand, seven hundred twenty-eight".