21611716701117 has 8 divisors (see below), whose sum is σ = 30332233966560. Its totient is φ = 13649505284880.

The previous prime is 21611716701109. The next prime is 21611716701121. The reversal of 21611716701117 is 71110761711612.

It is a happy number.

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

It is not a de Polignac number, because 21611716701117 - 2³ = 21611716701109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21611716700117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189576462234 + ... + 189576462347.

It is an arithmetic number, because the mean of its divisors is an integer number (3791529245820).

Almost surely, 2^{21611716701117} is an apocalyptic number.

It is an amenable number.

21611716701117 is a deficient number, since it is larger than the sum of its proper divisors (8720517265443).

21611716701117 is a wasteful number, since it uses less digits than its factorization.

21611716701117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379152924603.

The product of its (nonzero) digits is 24696, while the sum is 42.

The spelling of 21611716701117 in words is "twenty-one trillion, six hundred eleven billion, seven hundred sixteen million, seven hundred one thousand, one hundred seventeen".