33123204161 has 2 divisors, whose sum is σ = 33123204162. Its totient is φ = 33123204160.

The previous prime is 33123204157. The next prime is 33123204251. The reversal of 33123204161 is 16140232133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21186549136 + 11936655025 = 145556^2 + 109255^2 .

It is a cyclic number.

It is not a de Polignac number, because 33123204161 - 2² = 33123204157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33123204161.

It is not a weakly prime, because it can be changed into another prime (33123204131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16561602080 + 16561602081.

It is an arithmetic number, because the mean of its divisors is an integer number (16561602081).

Almost surely, 2^33123204161 is an apocalyptic number.

It is an amenable number.

33123204161 is a deficient number, since it is larger than the sum of its proper divisors (1).

33123204161 is an equidigital number, since it uses as much as digits as its factorization.

33123204161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 33123204161 its reverse (16140232133), we get a palindrome (49263436294).

The spelling of 33123204161 in words is "thirty-three billion, one hundred twenty-three million, two hundred four thousand, one hundred sixty-one".