50126779791 has 24 divisors (see below), whose sum is σ = 79244989824. Its totient is φ = 30280890960.

The previous prime is 50126779789. The next prime is 50126779873. The reversal of 50126779791 is 19797762105.

It is a happy number.

50126779791 is a `hidden beast` number, since 501 + 2 + 67 + 7 + 9 + 79 + 1 = 666.

It is not a de Polignac number, because 50126779791 - 2¹ = 50126779789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50126779771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 794251 + ... + 855036.

It is an arithmetic number, because the mean of its divisors is an integer number (3301874576).

Almost surely, 2^50126779791 is an apocalyptic number.

50126779791 is a deficient number, since it is larger than the sum of its proper divisors (29118210033).

50126779791 is a wasteful number, since it uses less digits than its factorization.

50126779791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649611 (or 1649608 counting only the distinct ones).

The product of its (nonzero) digits is 1666980, while the sum is 54.

The spelling of 50126779791 in words is "fifty billion, one hundred twenty-six million, seven hundred seventy-nine thousand, seven hundred ninety-one".