50171212018 has 16 divisors (see below), whose sum is σ = 77144591160. Its totient is φ = 24457177600.

The previous prime is 50171212001. The next prime is 50171212031. The reversal of 50171212018 is 81021217105.

It can be written as a sum of positive squares in 4 ways, for example, as 26175033369 + 23996178649 = 161787^2 + 154907^2 .

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 7 ways as a sum of consecutive naturals, for example, 85123 + ... + 328006.

Almost surely, 2^50171212018 is an apocalyptic number.

50171212018 is a deficient number, since it is larger than the sum of its proper divisors (26973379142).

50171212018 is a wasteful number, since it uses less digits than its factorization.

50171212018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414653.

The product of its (nonzero) digits is 1120, while the sum is 28.

The spelling of 50171212018 in words is "fifty billion, one hundred seventy-one million, two hundred twelve thousand, eighteen".