20430771161 has 8 divisors (see below), whose sum is σ = 20759962080. Its totient is φ = 20102293728.

The previous prime is 20430771133. The next prime is 20430771169. The reversal of 20430771161 is 16117703402.

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 20430771161 - 2¹⁸ = 20430509017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20430771169) 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 7 ways as a sum of consecutive naturals, for example, 120491 + ... + 235328.

It is an arithmetic number, because the mean of its divisors is an integer number (2594995260).

Almost surely, 2^20430771161 is an apocalyptic number.

It is an amenable number.

20430771161 is a deficient number, since it is larger than the sum of its proper divisors (329190919).

20430771161 is an equidigital number, since it uses as much as digits as its factorization.

20430771161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356743.

The product of its (nonzero) digits is 7056, while the sum is 32.

The spelling of 20430771161 in words is "twenty billion, four hundred thirty million, seven hundred seventy-one thousand, one hundred sixty-one".