50663454921 has 6 divisors (see below), whose sum is σ = 73180546010. Its totient is φ = 33775636608.

The previous prime is 50663454911. The next prime is 50663454949. The reversal of 50663454921 is 12945436605.

50663454921 is a `hidden beast` number, since 5 + 0 + 6 + 634 + 5 + 4 + 9 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 47845437696 + 2818017225 = 218736^2 + 53085^2 .

It is not a de Polignac number, because 50663454921 - 2⁹ = 50663454409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50663454911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2814636376 + ... + 2814636393.

Almost surely, 2^50663454921 is an apocalyptic number.

It is an amenable number.

50663454921 is a deficient number, since it is larger than the sum of its proper divisors (22517091089).

50663454921 is a wasteful number, since it uses less digits than its factorization.

50663454921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5629272775 (or 5629272772 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 50663454921 in words is "fifty billion, six hundred sixty-three million, four hundred fifty-four thousand, nine hundred twenty-one".