50666587859 has 4 divisors (see below), whose sum is σ = 50794211904. Its totient is φ = 50538963816.

The previous prime is 50666587841. The next prime is 50666587871. The reversal of 50666587859 is 95878566605.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50666587859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50666587795 and 50666587804.

It is not an unprimeable number, because it can be changed into a prime (50666587819) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 63811427 + ... + 63812220.

It is an arithmetic number, because the mean of its divisors is an integer number (12698552976).

Almost surely, 2^50666587859 is an apocalyptic number.

50666587859 is a deficient number, since it is larger than the sum of its proper divisors (127624045).

50666587859 is a wasteful number, since it uses less digits than its factorization.

50666587859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127624044.

The product of its (nonzero) digits is 108864000, while the sum is 65.

The spelling of 50666587859 in words is "fifty billion, six hundred sixty-six million, five hundred eighty-seven thousand, eight hundred fifty-nine".