33664344361 has 4 divisors (see below), whose sum is σ = 33666656452. Its totient is φ = 33662032272.

The previous prime is 33664344349. The next prime is 33664344379. The reversal of 33664344361 is 16344346633.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16344346633 = 3067 ⋅5329099.

It can be written as a sum of positive squares in 2 ways, for example, as 24321962025 + 9342382336 = 155955^2 + 96656^2 .

It is a cyclic number.

It is not a de Polignac number, because 33664344361 - 2³³ = 25074409769 is a prime.

It is a super-2 number, since 2×33664344361² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33664344331) 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 3 ways as a sum of consecutive naturals, for example, 1134066 + ... + 1163371.

It is an arithmetic number, because the mean of its divisors is an integer number (8416664113).

Almost surely, 2^33664344361 is an apocalyptic number.

It is an amenable number.

33664344361 is a deficient number, since it is larger than the sum of its proper divisors (2312091).

33664344361 is a wasteful number, since it uses less digits than its factorization.

33664344361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312090.

The product of its digits is 1119744, while the sum is 43.

The spelling of 33664344361 in words is "thirty-three billion, six hundred sixty-four million, three hundred forty-four thousand, three hundred sixty-one".