51500305068 has 24 divisors (see below), whose sum is σ = 126491977920. Its totient is φ = 16263254160.

The previous prime is 51500305061. The next prime is 51500305091. The reversal of 51500305068 is 86050300515.

It is not an unprimeable number, because it can be changed into a prime (51500305061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112939038 + ... + 112939493.

It is an arithmetic number, because the mean of its divisors is an integer number (5270499080).

Almost surely, 2^51500305068 is an apocalyptic number.

It is an amenable number.

51500305068 is an abundant number, since it is smaller than the sum of its proper divisors (74991672852).

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

51500305068 is a wasteful number, since it uses less digits than its factorization.

51500305068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225878557 (or 225878555 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 51500305068 in words is "fifty-one billion, five hundred million, three hundred five thousand, sixty-eight".