50021599680 has 1344 divisors, whose sum is σ = 213796961280. Its totient is φ = 10919411712.

The previous prime is 50021599673. The next prime is 50021599681. The reversal of 50021599680 is 8699512005.

50021599680 is a `hidden beast` number, since 50 + 0 + 2 + 1 + 599 + 6 + 8 + 0 = 666.

It is a super-2 number, since 2×50021599680² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50021599681) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 746591007 + ... + 746591073.

It is an arithmetic number, because the mean of its divisors is an integer number (159075120).

Almost surely, 2^50021599680 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 50021599680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106898480640).

50021599680 is an abundant number, since it is smaller than the sum of its proper divisors (163775361600).

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

50021599680 is a wasteful number, since it uses less digits than its factorization.

50021599680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The spelling of 50021599680 in words is "fifty billion, twenty-one million, five hundred ninety-nine thousand, six hundred eighty".