50994637891 has 2 divisors, whose sum is σ = 50994637892. Its totient is φ = 50994637890.

The previous prime is 50994637849. The next prime is 50994637901. The reversal of 50994637891 is 19873649905.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50994637891 - 2¹⁹ = 50994113603 is a prime.

It is not a weakly prime, because it can be changed into another prime (50994637091) 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, 25497318945 + 25497318946.

It is an arithmetic number, because the mean of its divisors is an integer number (25497318946).

Almost surely, 2^50994637891 is an apocalyptic number.

50994637891 is a deficient number, since it is larger than the sum of its proper divisors (1).

50994637891 is an equidigital number, since it uses as much as digits as its factorization.

50994637891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 61.

The spelling of 50994637891 in words is "fifty billion, nine hundred ninety-four million, six hundred thirty-seven thousand, eight hundred ninety-one".