51018275208 has 64 divisors (see below), whose sum is σ = 129697286400. Its totient is φ = 16721003520.

The previous prime is 51018275179. The next prime is 51018275261. The reversal of 51018275208 is 80257281015.

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 15 ways as a sum of consecutive naturals, for example, 401110 + ... + 512762.

It is an arithmetic number, because the mean of its divisors is an integer number (2026520100).

Almost surely, 2^51018275208 is an apocalyptic number.

It is an amenable number.

51018275208 is an abundant number, since it is smaller than the sum of its proper divisors (78679011192).

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

51018275208 is a wasteful number, since it uses less digits than its factorization.

51018275208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111982 (or 111978 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 39.

The spelling of 51018275208 in words is "fifty-one billion, eighteen million, two hundred seventy-five thousand, two hundred eight".