20340179161 has 3 divisors (see below), whose sum is σ = 20340321781. Its totient is φ = 20340036542.

The previous prime is 20340179149. The next prime is 20340179173. The reversal of 20340179161 is 16197104302.

The square root of 20340179161 is 142619.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (20340179149) and next prime (20340179173).

It is not a de Polignac number, because 20340179161 - 2⁷ = 20340179033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20340179861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 71310 + ... + 213928.

Almost surely, 2^20340179161 is an apocalyptic number.

20340179161 is the 142619-th square number.

20340179161 is the 71310-th centered octagonal number.

It is an amenable number.

20340179161 is a deficient number, since it is larger than the sum of its proper divisors (142620).

20340179161 is an frugal number, since it uses more digits than its factorization.

20340179161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285238 (or 142619 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 20340179161 in words is "twenty billion, three hundred forty million, one hundred seventy-nine thousand, one hundred sixty-one".