2160721716 has 12 divisors (see below), whose sum is σ = 5041684032. Its totient is φ = 720240568.

The previous prime is 2160721711. The next prime is 2160721721. The reversal of 2160721716 is 6171270612.

2160721716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2160721711) and next prime (2160721721).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2160721711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90030060 + ... + 90030083.

It is an arithmetic number, because the mean of its divisors is an integer number (420140336).

Almost surely, 2^2160721716 is an apocalyptic number.

It is an amenable number.

2160721716 is an abundant number, since it is smaller than the sum of its proper divisors (2880962316).

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

2160721716 is a wasteful number, since it uses less digits than its factorization.

2160721716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180060150 (or 180060148 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 2160721716 is about 46483.5639339326. The cubic root of 2160721716 is about 1292.8047692822.

The spelling of 2160721716 in words is "two billion, one hundred sixty million, seven hundred twenty-one thousand, seven hundred sixteen".