52178872648728 has 64 divisors (see below), whose sum is σ = 149095104226560. Its totient is φ = 14906988233856.

The previous prime is 52178872648709. The next prime is 52178872648739. The reversal of 52178872648728 is 82784627887125.

52178872648728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 52178872648728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11143551 + ... + 15117422.

It is an arithmetic number, because the mean of its divisors is an integer number (2329611003540).

Almost surely, 2^{52178872648728} is an apocalyptic number.

It is an amenable number.

52178872648728 is an abundant number, since it is smaller than the sum of its proper divisors (96916231577832).

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

52178872648728 is a wasteful number, since it uses less digits than its factorization.

52178872648728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26272816 (or 26272812 counting only the distinct ones).

The product of its digits is 1348730880, while the sum is 75.

The spelling of 52178872648728 in words is "fifty-two trillion, one hundred seventy-eight billion, eight hundred seventy-two million, six hundred forty-eight thousand, seven hundred twenty-eight".