21717418414 has 8 divisors (see below), whose sum is σ = 32794759800. Its totient is φ = 10785831816.

The previous prime is 21717418379. The next prime is 21717418427. The reversal of 21717418414 is 41481471712.

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 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, 36438324 + ... + 36438919.

It is an arithmetic number, because the mean of its divisors is an integer number (4099344975).

Almost surely, 2^21717418414 is an apocalyptic number.

21717418414 is a deficient number, since it is larger than the sum of its proper divisors (11077341386).

21717418414 is a wasteful number, since it uses less digits than its factorization.

21717418414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72877394.

The product of its digits is 50176, while the sum is 40.

The spelling of 21717418414 in words is "twenty-one billion, seven hundred seventeen million, four hundred eighteen thousand, four hundred fourteen".