50049999991 has 2 divisors, whose sum is σ = 50049999992. Its totient is φ = 50049999990.

The previous prime is 50049999947. The next prime is 50050000003. The reversal of 50049999991 is 19999994005.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50049999991 - 2¹⁷ = 50049868919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50049999911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25024999995 + 25024999996.

It is an arithmetic number, because the mean of its divisors is an integer number (25024999996).

Almost surely, 2^50049999991 is an apocalyptic number.

50049999991 is a deficient number, since it is larger than the sum of its proper divisors (1).

50049999991 is an equidigital number, since it uses as much as digits as its factorization.

50049999991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10628820, while the sum is 64.

The spelling of 50049999991 in words is "fifty billion, forty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-one".