21717714011 has 16 divisors (see below), whose sum is σ = 24913137600. Its totient is φ = 18545630208.

The previous prime is 21717713951. The next prime is 21717714041. The reversal of 21717714011 is 11041771712.

It is not a de Polignac number, because 21717714011 - 2¹⁴ = 21717697627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21717714041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2590835 + ... + 2599203.

It is an arithmetic number, because the mean of its divisors is an integer number (1557071100).

Almost surely, 2^21717714011 is an apocalyptic number.

21717714011 is a deficient number, since it is larger than the sum of its proper divisors (3195423589).

21717714011 is an equidigital number, since it uses as much as digits as its factorization.

21717714011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9718.

The product of its (nonzero) digits is 2744, while the sum is 32.

The spelling of 21717714011 in words is "twenty-one billion, seven hundred seventeen million, seven hundred fourteen thousand, eleven".