50191644903 has 4 divisors (see below), whose sum is σ = 66922193208. Its totient is φ = 33461096600.

The previous prime is 50191644847. The next prime is 50191644931. The reversal of 50191644903 is 30944619105.

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

It is a cyclic number.

It is not a de Polignac number, because 50191644903 - 2¹³ = 50191636711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50191644103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8365274148 + ... + 8365274153.

It is an arithmetic number, because the mean of its divisors is an integer number (16730548302).

Almost surely, 2^50191644903 is an apocalyptic number.

50191644903 is a deficient number, since it is larger than the sum of its proper divisors (16730548305).

50191644903 is a wasteful number, since it uses less digits than its factorization.

50191644903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16730548304.

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 50191644903 in words is "fifty billion, one hundred ninety-one million, six hundred forty-four thousand, nine hundred three".