50668729216 has 128 divisors (see below), whose sum is σ = 119310428160. Its totient is φ = 20974602240.

The previous prime is 50668729193. The next prime is 50668729219. The reversal of 50668729216 is 61292786605.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50668729219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17858550 + ... + 17861386.

It is an arithmetic number, because the mean of its divisors is an integer number (932112720).

Almost surely, 2^50668729216 is an apocalyptic number.

50668729216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50668729216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59655214080).

50668729216 is an abundant number, since it is smaller than the sum of its proper divisors (68641698944).

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

50668729216 is a wasteful number, since it uses less digits than its factorization.

50668729216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532 (or 3520 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 50668729216 in words is "fifty billion, six hundred sixty-eight million, seven hundred twenty-nine thousand, two hundred sixteen".