21716116665110 has 96 divisors (see below), whose sum is σ = 49157718812640. Its totient is φ = 6863016480768.

The previous prime is 21716116665107. The next prime is 21716116665227. The reversal of 21716116665110 is 1156661161712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31176587 + ... + 31865526.

It is an arithmetic number, because the mean of its divisors is an integer number (512059570965).

Almost surely, 2^{21716116665110} is an apocalyptic number.

21716116665110 is an abundant number, since it is smaller than the sum of its proper divisors (27441602147530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21716116665110 is a wasteful number, since it uses less digits than its factorization.

21716116665110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63042190 (or 63042183 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 44.

The spelling of 21716116665110 in words is "twenty-one trillion, seven hundred sixteen billion, one hundred sixteen million, six hundred sixty-five thousand, one hundred ten".