2021616023166 has 48 divisors (see below), whose sum is σ = 4641374363184. Its totient is φ = 633747094272.

The previous prime is 2021616023111. The next prime is 2021616023171. The reversal of 2021616023166 is 6613206161202.

2021616023166 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 616 + 0 + 2 + 31 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2021616023166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2127445 + ... + 2927328.

It is an arithmetic number, because the mean of its divisors is an integer number (96695299233).

Almost surely, 2^{2021616023166} is an apocalyptic number.

2021616023166 is an abundant number, since it is smaller than the sum of its proper divisors (2619758340018).

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

2021616023166 is a wasteful number, since it uses less digits than its factorization.

2021616023166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5056105 (or 5056102 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 2021616023166 in words is "two trillion, twenty-one billion, six hundred sixteen million, twenty-three thousand, one hundred sixty-six".