50112218520 has 1152 divisors, whose sum is σ = 218847283200. Its totient is φ = 9678569472.

The previous prime is 50112218509. The next prime is 50112218561. The reversal of 50112218520 is 2581221105.

It is a happy number.

50112218520 is a `hidden beast` number, since 5 + 0 + 1 + 122 + 18 + 520 = 666.

It is a super-2 number, since 2×50112218520² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 634331841 + ... + 634331919.

It is an arithmetic number, because the mean of its divisors is an integer number (189971600).

Almost surely, 2^50112218520 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 50112218520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109423641600).

50112218520 is an abundant number, since it is smaller than the sum of its proper divisors (168735064680).

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

50112218520 is a wasteful number, since it uses less digits than its factorization.

50112218520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

Adding to 50112218520 its reverse (2581221105), we get a palindrome (52693439625).

The spelling of 50112218520 in words is "fifty billion, one hundred twelve million, two hundred eighteen thousand, five hundred twenty".