50195864221 has 4 divisors (see below), whose sum is σ = 50196960700. Its totient is φ = 50194767744.

The previous prime is 50195864219. The next prime is 50195864227. The reversal of 50195864221 is 12246859105.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37593332100 + 12602532121 = 193890^2 + 112261^2 .

It is a cyclic number.

It is not a de Polignac number, because 50195864221 - 2¹ = 50195864219 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 (50195864227) 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, 476436 + ... + 572173.

It is an arithmetic number, because the mean of its divisors is an integer number (12549240175).

Almost surely, 2^50195864221 is an apocalyptic number.

It is an amenable number.

50195864221 is a deficient number, since it is larger than the sum of its proper divisors (1096479).

50195864221 is a wasteful number, since it uses less digits than its factorization.

50195864221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096478.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 50195864221 in words is "fifty billion, one hundred ninety-five million, eight hundred sixty-four thousand, two hundred twenty-one".