51549527928 has 16 divisors (see below), whose sum is σ = 128873819880. Its totient is φ = 17183175968.

The previous prime is 51549527927. The next prime is 51549527951. The reversal of 51549527928 is 82972594515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51549527927) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1073948475 + ... + 1073948522.

Almost surely, 2^51549527928 is an apocalyptic number.

It is an amenable number.

51549527928 is an abundant number, since it is smaller than the sum of its proper divisors (77324291952).

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

51549527928 is a wasteful number, since it uses less digits than its factorization.

51549527928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147897006 (or 2147897002 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 57.

The spelling of 51549527928 in words is "fifty-one billion, five hundred forty-nine million, five hundred twenty-seven thousand, nine hundred twenty-eight".