50321281920 has 512 divisors, whose sum is σ = 198640512000. Its totient is φ = 10551361536.

The previous prime is 50321281909. The next prime is 50321281961. The reversal of 50321281920 is 2918212305.

It is a happy number.

50321281920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31274076 + ... + 31275684.

It is an arithmetic number, because the mean of its divisors is an integer number (387969750).

Almost surely, 2^50321281920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50321281920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99320256000).

50321281920 is an abundant number, since it is smaller than the sum of its proper divisors (148319230080).

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

50321281920 is a wasteful number, since it uses less digits than its factorization.

50321281920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830 (or 1818 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 50321281920 in words is "fifty billion, three hundred twenty-one million, two hundred eighty-one thousand, nine hundred twenty".