11115643220050 has 24 divisors (see below), whose sum is σ = 20691810406116. Its totient is φ = 4442662875840.

The previous prime is 11115643220041. The next prime is 11115643220083. The reversal of 11115643220050 is 5002234651111.

It can be written as a sum of positive squares in 6 ways, for example, as 2127213499009 + 8988429721041 = 1458497^2 + 2998071^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11115643219994 and 11115643220021.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89797837 + ... + 89921536.

Almost surely, 2^{11115643220050} is an apocalyptic number.

11115643220050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11115643220050 is a deficient number, since it is larger than the sum of its proper divisors (9576167186066).

11115643220050 is a wasteful number, since it uses less digits than its factorization.

11115643220050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179720622 (or 179720617 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 11115643220050 its reverse (5002234651111), we get a palindrome (16117877871161).

The spelling of 11115643220050 in words is "eleven trillion, one hundred fifteen billion, six hundred forty-three million, two hundred twenty thousand, fifty".