2163360561 has 16 divisors (see below), whose sum is σ = 2932749504. Its totient is φ = 1418303744.

The previous prime is 2163360559. The next prime is 2163360581. The reversal of 2163360561 is 1650633612.

It is a cyclic number.

It is not a de Polignac number, because 2163360561 - 2¹ = 2163360559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2163360581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19381 + ... + 68573.

It is an arithmetic number, because the mean of its divisors is an integer number (183296844).

Almost surely, 2^2163360561 is an apocalyptic number.

It is an amenable number.

2163360561 is a deficient number, since it is larger than the sum of its proper divisors (769388943).

2163360561 is a wasteful number, since it uses less digits than its factorization.

2163360561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49440.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 2163360561 is about 46511.9399831914. The cubic root of 2163360561 is about 1293.3308471377.

The spelling of 2163360561 in words is "two billion, one hundred sixty-three million, three hundred sixty thousand, five hundred sixty-one".