2166447520216 has 128 divisors (see below), whose sum is σ = 4879320768000. Its totient is φ = 882200051712.

The previous prime is 2166447520199. The next prime is 2166447520229. The reversal of 2166447520216 is 6120257446612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34610275 + ... + 34672813.

It is an arithmetic number, because the mean of its divisors is an integer number (38119693500).

Almost surely, 2^{2166447520216} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166447520216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2439660384000).

2166447520216 is an abundant number, since it is smaller than the sum of its proper divisors (2712873247784).

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

2166447520216 is a wasteful number, since it uses less digits than its factorization.

2166447520216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62921 (or 62917 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 2166447520216 in words is "two trillion, one hundred sixty-six billion, four hundred forty-seven million, five hundred twenty thousand, two hundred sixteen".