2161300050 has 384 divisors, whose sum is σ = 7461189120. Its totient is φ = 447897600.

The previous prime is 2161299911. The next prime is 2161300051. The reversal of 2161300050 is 500031612.

2161300050 is a `hidden beast` number, since 2 + 1 + 613 + 0 + 0 + 0 + 50 = 666.

It is a super-2 number, since 2×2161300050² = 9342435812260005000, which contains 22 as substring.

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 = 2161299996 and 2161300032.

It is not an unprimeable number, because it can be changed into a prime (2161300051) 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, 8967930 + ... + 8968170.

It is an arithmetic number, because the mean of its divisors is an integer number (19430180).

Almost surely, 2^2161300050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2161300050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3730594560).

2161300050 is an abundant number, since it is smaller than the sum of its proper divisors (5299889070).

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

2161300050 is a wasteful number, since it uses less digits than its factorization.

2161300050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2161300050 is about 46489.7843617283. The cubic root of 2161300050 is about 1292.9201020822.

Adding to 2161300050 its reverse (500031612), we get a palindrome (2661331662).

The spelling of 2161300050 in words is "two billion, one hundred sixty-one million, three hundred thousand, fifty".