50020312320 has 720 divisors, whose sum is σ = 198729780480. Its totient is φ = 11910758400.

The previous prime is 50020312289. The next prime is 50020312333. The reversal of 50020312320 is 2321302005.

50020312320 is a `hidden beast` number, since 500 + 20 + 3 + 123 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 50020312293 and 50020312302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 69568921 + ... + 69569639.

It is an arithmetic number, because the mean of its divisors is an integer number (276013584).

Almost surely, 2^50020312320 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 50020312320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99364890240).

50020312320 is an abundant number, since it is smaller than the sum of its proper divisors (148709468160).

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

50020312320 is a wasteful number, since it uses less digits than its factorization.

50020312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 50020312320 its reverse (2321302005), we get a palindrome (52341614325).

The spelling of 50020312320 in words is "fifty billion, twenty million, three hundred twelve thousand, three hundred twenty".