21133916366 has 8 divisors (see below), whose sum is σ = 31794943440. Its totient is φ = 10535601888.

The previous prime is 21133916341. The next prime is 21133916383. The reversal of 21133916366 is 66361933112.

21133916366 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15677306 + ... + 15678653.

It is an arithmetic number, because the mean of its divisors is an integer number (3974367930).

Almost surely, 2^21133916366 is an apocalyptic number.

21133916366 is a deficient number, since it is larger than the sum of its proper divisors (10661027074).

21133916366 is a wasteful number, since it uses less digits than its factorization.

21133916366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31356298.

The product of its digits is 104976, while the sum is 41.

The spelling of 21133916366 in words is "twenty-one billion, one hundred thirty-three million, nine hundred sixteen thousand, three hundred sixty-six".