2171320387416 has 80 divisors (see below), whose sum is σ = 6083328022200. Its totient is φ = 723580615296.

The previous prime is 2171320387393. The next prime is 2171320387417. The reversal of 2171320387416 is 6147830231712.

2171320387416 is a `hidden beast` number, since 2 + 17 + 13 + 203 + 8 + 7 + 416 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171320387417) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 1997791 + ... + 2886833.

Almost surely, 2^{2171320387416} is an apocalyptic number.

It is an amenable number.

2171320387416 is an abundant number, since it is smaller than the sum of its proper divisors (3912007634784).

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

2171320387416 is a wasteful number, since it uses less digits than its factorization.

2171320387416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892830 (or 892817 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 2171320387416 in words is "two trillion, one hundred seventy-one billion, three hundred twenty million, three hundred eighty-seven thousand, four hundred sixteen".