50391843648 has 28 divisors (see below), whose sum is σ = 133328420160. Its totient is φ = 16797281152.

The previous prime is 50391843613. The next prime is 50391843653. The reversal of 50391843648 is 84634819305.

It is a self number, because there is not a number n which added to its sum of digits gives 50391843648.

It is a congruent number.

It is an unprimeable number.

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, 131228568 + ... + 131228951.

Almost surely, 2^50391843648 is an apocalyptic number.

It is an amenable number.

50391843648 is an abundant number, since it is smaller than the sum of its proper divisors (82936576512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50391843648 is a wasteful number, since it uses less digits than its factorization.

50391843648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262457534 (or 262457524 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 50391843648 in words is "fifty billion, three hundred ninety-one million, eight hundred forty-three thousand, six hundred forty-eight".