21133914718 has 48 divisors (see below), whose sum is σ = 39101680800. Its totient is φ = 8512390656.

The previous prime is 21133914707. The next prime is 21133914731. The reversal of 21133914718 is 81741933112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1202458 + ... + 1219906.

It is an arithmetic number, because the mean of its divisors is an integer number (814618350).

Almost surely, 2^21133914718 is an apocalyptic number.

21133914718 is a deficient number, since it is larger than the sum of its proper divisors (17967766082).

21133914718 is a wasteful number, since it uses less digits than its factorization.

21133914718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18209 (or 18202 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The spelling of 21133914718 in words is "twenty-one billion, one hundred thirty-three million, nine hundred fourteen thousand, seven hundred eighteen".