21717670933 has 8 divisors (see below), whose sum is σ = 25134375680. Its totient is φ = 18379511280.

The previous prime is 21717670927. The next prime is 21717670963. The reversal of 21717670933 is 33907671712.

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

It is a cyclic number.

It is not a de Polignac number, because 21717670933 - 2¹⁷ = 21717539861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21717670913) 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 7 ways as a sum of consecutive naturals, for example, 19635678 + ... + 19636783.

It is an arithmetic number, because the mean of its divisors is an integer number (3141796960).

Almost surely, 2^21717670933 is an apocalyptic number.

It is an amenable number.

21717670933 is a deficient number, since it is larger than the sum of its proper divisors (3416704747).

21717670933 is an equidigital number, since it uses as much as digits as its factorization.

21717670933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39272547.

The product of its (nonzero) digits is 333396, while the sum is 46.

The spelling of 21717670933 in words is "twenty-one billion, seven hundred seventeen million, six hundred seventy thousand, nine hundred thirty-three".