2160656560 has 40 divisors (see below), whose sum is σ = 5079987360. Its totient is φ = 854548992.

The previous prime is 2160656503. The next prime is 2160656567. The reversal of 2160656560 is 656560612.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2160656567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144612 + ... + 158851.

It is an arithmetic number, because the mean of its divisors is an integer number (126999684).

Almost surely, 2^2160656560 is an apocalyptic number.

2160656560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2160656560 is an abundant number, since it is smaller than the sum of its proper divisors (2919330800).

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

2160656560 is a wasteful number, since it uses less digits than its factorization.

2160656560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303565 (or 303559 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 2160656560 is about 46482.8630787735. The cubic root of 2160656560 is about 1292.7917744214.

The spelling of 2160656560 in words is "two billion, one hundred sixty million, six hundred fifty-six thousand, five hundred sixty".