20140660165163 has 4 divisors (see below), whose sum is σ = 20141020203600. Its totient is φ = 20140300126728.

The previous prime is 20140660165133. The next prime is 20140660165193. The reversal of 20140660165163 is 36156106604102.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20140660165133) and next prime (20140660165193).

It is a cyclic number.

It is not a de Polignac number, because 20140660165163 - 2³⁰ = 20139586423339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20140660165163.

It is not an unprimeable number, because it can be changed into a prime (20140660165133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179935295 + ... + 180047192.

It is an arithmetic number, because the mean of its divisors is an integer number (5035255050900).

Almost surely, 2^{20140660165163} is an apocalyptic number.

20140660165163 is a deficient number, since it is larger than the sum of its proper divisors (360038437).

20140660165163 is an equidigital number, since it uses as much as digits as its factorization.

20140660165163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360038436.

The product of its (nonzero) digits is 155520, while the sum is 41.

Adding to 20140660165163 its reverse (36156106604102), we get a palindrome (56296766769265).

The spelling of 20140660165163 in words is "twenty trillion, one hundred forty billion, six hundred sixty million, one hundred sixty-five thousand, one hundred sixty-three".