2161436565163 has 8 divisors (see below), whose sum is σ = 2182451817728. Its totient is φ = 2140421898024.

The previous prime is 2161436565157. The next prime is 2161436565191. The reversal of 2161436565163 is 3615656341612.

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 2161436565163 - 2²⁵ = 2161403010731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2161436565263) 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, 12874306 + ... + 13041112.

It is an arithmetic number, because the mean of its divisors is an integer number (272806477216).

Almost surely, 2^{2161436565163} is an apocalyptic number.

2161436565163 is a deficient number, since it is larger than the sum of its proper divisors (21015252565).

2161436565163 is a wasteful number, since it uses less digits than its factorization.

2161436565163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292713.

The product of its digits is 2332800, while the sum is 49.

The spelling of 2161436565163 in words is "two trillion, one hundred sixty-one billion, four hundred thirty-six million, five hundred sixty-five thousand, one hundred sixty-three".