50020280640 has 672 divisors, whose sum is σ = 197605204992. Its totient is φ = 11513548800.

The previous prime is 50020280623. The next prime is 50020280659. The reversal of 50020280640 is 4608202005.

50020280640 is a `hidden beast` number, since 500 + 20 + 2 + 80 + 64 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 943778854 + ... + 943778906.

Almost surely, 2^50020280640 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 50020280640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98802602496).

50020280640 is an abundant number, since it is smaller than the sum of its proper divisors (147584924352).

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

50020280640 is a wasteful number, since it uses less digits than its factorization.

50020280640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 50020280640 its reverse (4608202005), we get a palindrome (54628482645).

The spelling of 50020280640 in words is "fifty billion, twenty million, two hundred eighty thousand, six hundred forty".