50779908918 has 192 divisors, whose sum is σ = 120982118400. Its totient is φ = 15351517440.

The previous prime is 50779908911. The next prime is 50779908919. The reversal of 50779908918 is 81980997705.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50779908911) 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 95 ways as a sum of consecutive naturals, for example, 136138980 + ... + 136139352.

It is an arithmetic number, because the mean of its divisors is an integer number (630115200).

Almost surely, 2^50779908918 is an apocalyptic number.

50779908918 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 50779908918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60491059200).

50779908918 is an abundant number, since it is smaller than the sum of its proper divisors (70202209482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50779908918 is a wasteful number, since it uses less digits than its factorization.

50779908918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 63.

The spelling of 50779908918 in words is "fifty billion, seven hundred seventy-nine million, nine hundred eight thousand, nine hundred eighteen".