20134434161 has 2 divisors, whose sum is σ = 20134434162. Its totient is φ = 20134434160.

The previous prime is 20134434127. The next prime is 20134434167. The reversal of 20134434161 is 16143443102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12064825600 + 8069608561 = 109840^2 + 89831^2 .

It is a cyclic number.

It is not a de Polignac number, because 20134434161 - 2¹⁴ = 20134417777 is a prime.

It is not a weakly prime, because it can be changed into another prime (20134434167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067217080 + 10067217081.

It is an arithmetic number, because the mean of its divisors is an integer number (10067217081).

Almost surely, 2^20134434161 is an apocalyptic number.

It is an amenable number.

20134434161 is a deficient number, since it is larger than the sum of its proper divisors (1).

20134434161 is an equidigital number, since it uses as much as digits as its factorization.

20134434161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 20134434161 its reverse (16143443102), we get a palindrome (36277877263).

The spelling of 20134434161 in words is "twenty billion, one hundred thirty-four million, four hundred thirty-four thousand, one hundred sixty-one".