2161680576 has 112 divisors (see below), whose sum is σ = 6510820608. Its totient is φ = 626560000.

The previous prime is 2161680539. The next prime is 2161680581. The reversal of 2161680576 is 6750861612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26326 + ... + 70826.

Almost surely, 2^2161680576 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 2161680576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3255410304).

2161680576 is an abundant number, since it is smaller than the sum of its proper divisors (4349140032).

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

2161680576 is a wasteful number, since it uses less digits than its factorization.

2161680576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44550 (or 44540 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 2161680576 is about 46493.8767581281. The cubic root of 2161680576 is about 1292.9959762987.

The spelling of 2161680576 in words is "two billion, one hundred sixty-one million, six hundred eighty thousand, five hundred seventy-six".