51327878386671 has 96 divisors (see below), whose sum is σ = 82602320486400. Its totient is φ = 30564080205120.

The previous prime is 51327878386669. The next prime is 51327878386699. The reversal of 51327878386671 is 17668387872315.

51327878386671 is a `hidden beast` number, since 5 + 1 + 327 + 87 + 83 + 86 + 6 + 71 = 666.

It is not a de Polignac number, because 51327878386671 - 2¹ = 51327878386669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51327878386671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51327878386621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1302090400 + ... + 1302129818.

It is an arithmetic number, because the mean of its divisors is an integer number (860440838400).

Almost surely, 2^{51327878386671} is an apocalyptic number.

51327878386671 is a deficient number, since it is larger than the sum of its proper divisors (31274442099729).

51327878386671 is a wasteful number, since it uses less digits than its factorization.

51327878386671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44201 (or 44198 counting only the distinct ones).

The product of its digits is 568995840, while the sum is 72.

The spelling of 51327878386671 in words is "fifty-one trillion, three hundred twenty-seven billion, eight hundred seventy-eight million, three hundred eighty-six thousand, six hundred seventy-one".