21116527163 has 4 divisors (see below), whose sum is σ = 21310256880. Its totient is φ = 20922797448.

The previous prime is 21116527151. The next prime is 21116527177. The reversal of 21116527163 is 36172561112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21116527163 is a prime.

It is a super-3 number, since 3×21116527163³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21116527123) 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 3 ways as a sum of consecutive naturals, for example, 96864695 + ... + 96864912.

It is an arithmetic number, because the mean of its divisors is an integer number (5327564220).

Almost surely, 2^21116527163 is an apocalyptic number.

21116527163 is a deficient number, since it is larger than the sum of its proper divisors (193729717).

21116527163 is a wasteful number, since it uses less digits than its factorization.

21116527163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193729716.

The product of its digits is 15120, while the sum is 35.

It can be divided in two parts, 211165 and 27163, that added together give a cube (238328 = 62³).

The spelling of 21116527163 in words is "twenty-one billion, one hundred sixteen million, five hundred twenty-seven thousand, one hundred sixty-three".