33454242161 has 2 divisors, whose sum is σ = 33454242162. Its totient is φ = 33454242160.

The previous prime is 33454242113. The next prime is 33454242181. The reversal of 33454242161 is 16124245433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33454239025 + 3136 = 182905^2 + 56^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33454242161 is a prime.

It is a super-2 number, since 2×33454242161² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (33454242181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16727121080 + 16727121081.

It is an arithmetic number, because the mean of its divisors is an integer number (16727121081).

Almost surely, 2^33454242161 is an apocalyptic number.

It is an amenable number.

33454242161 is a deficient number, since it is larger than the sum of its proper divisors (1).

33454242161 is an equidigital number, since it uses as much as digits as its factorization.

33454242161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 35.

Adding to 33454242161 its reverse (16124245433), we get a palindrome (49578487594).

The spelling of 33454242161 in words is "thirty-three billion, four hundred fifty-four million, two hundred forty-two thousand, one hundred sixty-one".