50487398189 has 4 divisors (see below), whose sum is σ = 50619219456. Its totient is φ = 50355576924.

The previous prime is 50487398179. The next prime is 50487398191. The reversal of 50487398189 is 98189378405.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50487398189 - 2²⁸ = 50218962733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50487398179) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 65910059 + ... + 65910824.

It is an arithmetic number, because the mean of its divisors is an integer number (12654804864).

Almost surely, 2^50487398189 is an apocalyptic number.

It is an amenable number.

50487398189 is a deficient number, since it is larger than the sum of its proper divisors (131821267).

50487398189 is a wasteful number, since it uses less digits than its factorization.

50487398189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131821266.

The product of its (nonzero) digits is 17418240, while the sum is 62.

The spelling of 50487398189 in words is "fifty billion, four hundred eighty-seven million, three hundred ninety-eight thousand, one hundred eighty-nine".