51728852188 has 24 divisors (see below), whose sum is σ = 97506030608. Its totient is φ = 23870681856.

The previous prime is 51728852171. The next prime is 51728852221. The reversal of 51728852188 is 88125882715.

It is a happy number.

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, 224020 + ... + 391972.

Almost surely, 2^51728852188 is an apocalyptic number.

It is an amenable number.

51728852188 is a deficient number, since it is larger than the sum of its proper divisors (45777178420).

51728852188 is a wasteful number, since it uses less digits than its factorization.

51728852188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173893 (or 173891 counting only the distinct ones).

The product of its digits is 2867200, while the sum is 55.

The spelling of 51728852188 in words is "fifty-one billion, seven hundred twenty-eight million, eight hundred fifty-two thousand, one hundred eighty-eight".