51871288165268 has 96 divisors (see below), whose sum is σ = 113141252259840. Its totient is φ = 20456341395840.

The previous prime is 51871288165223. The next prime is 51871288165271. The reversal of 51871288165268 is 86256188217815.

51871288165268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51871288165198 and 51871288165207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17410496 + ... + 20170967.

It is an arithmetic number, because the mean of its divisors is an integer number (1178554711040).

Almost surely, 2^{51871288165268} is an apocalyptic number.

It is an amenable number.

51871288165268 is an abundant number, since it is smaller than the sum of its proper divisors (61269964094572).

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

51871288165268 is a wasteful number, since it uses less digits than its factorization.

51871288165268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37581637 (or 37581635 counting only the distinct ones).

The product of its digits is 103219200, while the sum is 68.

The spelling of 51871288165268 in words is "fifty-one trillion, eight hundred seventy-one billion, two hundred eighty-eight million, one hundred sixty-five thousand, two hundred sixty-eight".