50718509889 has 8 divisors (see below), whose sum is σ = 67706454240. Its totient is φ = 33771452736.

The previous prime is 50718509887. The next prime is 50718509909. The reversal of 50718509889 is 98890581705.

50718509889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50718509889 - 2¹ = 50718509887 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50718509887) 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, 10218904 + ... + 10223865.

It is an arithmetic number, because the mean of its divisors is an integer number (8463306780).

Almost surely, 2^50718509889 is an apocalyptic number.

It is an amenable number.

50718509889 is a deficient number, since it is larger than the sum of its proper divisors (16987944351).

50718509889 is a wasteful number, since it uses less digits than its factorization.

50718509889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20443599.

The product of its (nonzero) digits is 7257600, while the sum is 60.

The spelling of 50718509889 in words is "fifty billion, seven hundred eighteen million, five hundred nine thousand, eight hundred eighty-nine".