51748879728 has 80 divisors (see below), whose sum is σ = 164534913536. Its totient is φ = 13648055040.

The previous prime is 51748879681. The next prime is 51748879783. The reversal of 51748879728 is 82797884715.

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 15 ways as a sum of consecutive naturals, for example, 5919268 + ... + 5928003.

Almost surely, 2^51748879728 is an apocalyptic number.

It is an amenable number.

51748879728 is an abundant number, since it is smaller than the sum of its proper divisors (112786033808).

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

51748879728 is a wasteful number, since it uses less digits than its factorization.

51748879728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11847302 (or 11847296 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 66.

The spelling of 51748879728 in words is "fifty-one billion, seven hundred forty-eight million, eight hundred seventy-nine thousand, seven hundred twenty-eight".