50821585920 has 704 divisors, whose sum is σ = 213647846400. Its totient is φ = 11209605120.

The previous prime is 50821585889. The next prime is 50821585937. The reversal of 50821585920 is 2958512805.

It is a happy number.

50821585920 is a `hidden beast` number, since 5 + 0 + 8 + 2 + 1 + 58 + 592 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 28061815 + ... + 28063625.

Almost surely, 2^50821585920 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 50821585920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106823923200).

50821585920 is an abundant number, since it is smaller than the sum of its proper divisors (162826260480).

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

50821585920 is a wasteful number, since it uses less digits than its factorization.

50821585920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881 (or 1857 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 45.

The spelling of 50821585920 in words is "fifty billion, eight hundred twenty-one million, five hundred eighty-five thousand, nine hundred twenty".