2160561700 has 72 divisors (see below), whose sum is σ = 5165544384. Its totient is φ = 777840000.

The previous prime is 2160561691. The next prime is 2160561731. The reversal of 2160561700 is 71650612.

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, 101377 + ... + 120823.

It is an arithmetic number, because the mean of its divisors is an integer number (71743672).

Almost surely, 2^2160561700 is an apocalyptic number.

2160561700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2160561700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2582772192).

2160561700 is an abundant number, since it is smaller than the sum of its proper divisors (3004982684).

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

2160561700 is a wasteful number, since it uses less digits than its factorization.

2160561700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19573 (or 19566 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2160561700 is about 46481.8426915285. The cubic root of 2160561700 is about 1292.7728548601.

The spelling of 2160561700 in words is "two billion, one hundred sixty million, five hundred sixty-one thousand, seven hundred".