50581013789 has 2 divisors, whose sum is σ = 50581013790. Its totient is φ = 50581013788.

The previous prime is 50581013741. The next prime is 50581013797. The reversal of 50581013789 is 98731018505.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33093067225 + 17487946564 = 181915^2 + 132242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50581013789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50581013719) 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, 25290506894 + 25290506895.

It is an arithmetic number, because the mean of its divisors is an integer number (25290506895).

Almost surely, 2^50581013789 is an apocalyptic number.

It is an amenable number.

50581013789 is a deficient number, since it is larger than the sum of its proper divisors (1).

50581013789 is an equidigital number, since it uses as much as digits as its factorization.

50581013789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 47.

The spelling of 50581013789 in words is "fifty billion, five hundred eighty-one million, thirteen thousand, seven hundred eighty-nine".