51871717168 has 20 divisors (see below), whose sum is σ = 100822552648. Its totient is φ = 25852993920.

The previous prime is 51871717147. The next prime is 51871717207. The reversal of 51871717168 is 86171717815.

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 3 ways as a sum of consecutive naturals, for example, 5173878 + ... + 5183893.

Almost surely, 2^51871717168 is an apocalyptic number.

It is an amenable number.

51871717168 is a deficient number, since it is larger than the sum of its proper divisors (48950835480).

51871717168 is a wasteful number, since it uses less digits than its factorization.

51871717168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10358092 (or 10358086 counting only the distinct ones).

The product of its digits is 658560, while the sum is 52.

The spelling of 51871717168 in words is "fifty-one billion, eight hundred seventy-one million, seven hundred seventeen thousand, one hundred sixty-eight".