20116217115 has 12 divisors (see below), whose sum is σ = 34868109744. Its totient is φ = 10728649104.

The previous prime is 20116217089. The next prime is 20116217123. The reversal of 20116217115 is 51171261102.

20116217115 is a `hidden beast` number, since 20 + 1 + 1 + 621 + 7 + 1 + 15 = 666.

It is not a de Polignac number, because 20116217115 - 2²⁶ = 20049108251 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 223513479 + ... + 223513568.

It is an arithmetic number, because the mean of its divisors is an integer number (2905675812).

Almost surely, 2^20116217115 is an apocalyptic number.

20116217115 is a deficient number, since it is larger than the sum of its proper divisors (14751892629).

20116217115 is a wasteful number, since it uses less digits than its factorization.

20116217115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447027058 (or 447027055 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

Adding to 20116217115 its reverse (51171261102), we get a palindrome (71287478217).

It can be divided in two parts, 2011 and 6217115, that added together give a palindrome (6219126).

The spelling of 20116217115 in words is "twenty billion, one hundred sixteen million, two hundred seventeen thousand, one hundred fifteen".