20050213185 has 24 divisors (see below), whose sum is σ = 36798039720. Its totient is φ = 10064420352.

The previous prime is 20050213181. The next prime is 20050213217. The reversal of 20050213185 is 58131205002.

It is a happy number.

20050213185 is a `hidden beast` number, since 20 + 0 + 502 + 131 + 8 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3880293264 + 16169919921 = 62292^2 + 127161^2 .

It is not a de Polignac number, because 20050213185 - 2² = 20050213181 is a prime.

It is a super-2 number, since 2×20050213185² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20050213181) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 13103950 + ... + 13105479.

It is an arithmetic number, because the mean of its divisors is an integer number (1533251655).

Almost surely, 2^20050213185 is an apocalyptic number.

It is an amenable number.

20050213185 is a deficient number, since it is larger than the sum of its proper divisors (16747826535).

20050213185 is a wasteful number, since it uses less digits than its factorization.

20050213185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26209457 (or 26209454 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 20050213185 its reverse (58131205002), we get a palindrome (78181418187).

The spelling of 20050213185 in words is "twenty billion, fifty million, two hundred thirteen thousand, one hundred eighty-five".