2160163561 has 8 divisors (see below), whose sum is σ = 2301253920. Its totient is φ = 2021812992.

The previous prime is 2160163547. The next prime is 2160163583. The reversal of 2160163561 is 1653610612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2160163561 - 2¹⁷ = 2160032489 is a prime.

It is a super-2 number, since 2×2160163561² = 9332613220544401442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2160163661) 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, 683320 + ... + 686473.

It is an arithmetic number, because the mean of its divisors is an integer number (287656740).

Almost surely, 2^2160163561 is an apocalyptic number.

It is an amenable number.

2160163561 is a deficient number, since it is larger than the sum of its proper divisors (141090359).

2160163561 is a wasteful number, since it uses less digits than its factorization.

2160163561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369895.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 2160163561 is about 46477.5597573711. The cubic root of 2160163561 is about 1292.6934411116.

The spelling of 2160163561 in words is "two billion, one hundred sixty million, one hundred sixty-three thousand, five hundred sixty-one".