50391843653 has 2 divisors, whose sum is σ = 50391843654. Its totient is φ = 50391843652.

The previous prime is 50391843613. The next prime is 50391843661. The reversal of 50391843653 is 35634819305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35900017729 + 14491825924 = 189473^2 + 120382^2 .

It is a cyclic number.

It is not a de Polignac number, because 50391843653 - 2¹² = 50391839557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50391843598 and 50391843607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50391843613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25195921826 + 25195921827.

It is an arithmetic number, because the mean of its divisors is an integer number (25195921827).

Almost surely, 2^50391843653 is an apocalyptic number.

It is an amenable number.

50391843653 is a deficient number, since it is larger than the sum of its proper divisors (1).

50391843653 is an equidigital number, since it uses as much as digits as its factorization.

50391843653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 50391843653 in words is "fifty billion, three hundred ninety-one million, eight hundred forty-three thousand, six hundred fifty-three".