21611716701116 has 12 divisors (see below), whose sum is σ = 37827196976520. Its totient is φ = 10803946136400.

The previous prime is 21611716701109. The next prime is 21611716701121. The reversal of 21611716701116 is 61110761711612.

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, 478028111 + ... + 478073318.

It is an arithmetic number, because the mean of its divisors is an integer number (3152266414710).

Almost surely, 2^{21611716701116} is an apocalyptic number.

It is an amenable number.

21611716701116 is a deficient number, since it is larger than the sum of its proper divisors (16215480275404).

21611716701116 is a wasteful number, since it uses less digits than its factorization.

21611716701116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956107084 (or 956107082 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 41.

The spelling of 21611716701116 in words is "twenty-one trillion, six hundred eleven billion, seven hundred sixteen million, seven hundred one thousand, one hundred sixteen".