33899949617 has 4 divisors (see below), whose sum is σ = 33908621376. Its totient is φ = 33891277860.

The previous prime is 33899949569. The next prime is 33899949647. The reversal of 33899949617 is 71694999833.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71694999833 = 4547 ⋅15767539.

It is a cyclic number.

It is not a de Polignac number, because 33899949617 - 2⁸ = 33899949361 is a prime.

It is a super-2 number, since 2×33899949617² (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 (33899949647) 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, 4330013 + ... + 4337834.

It is an arithmetic number, because the mean of its divisors is an integer number (8477155344).

Almost surely, 2^33899949617 is an apocalyptic number.

It is an amenable number.

33899949617 is a deficient number, since it is larger than the sum of its proper divisors (8671759).

33899949617 is an equidigital number, since it uses as much as digits as its factorization.

33899949617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8671758.

The product of its digits is 79361856, while the sum is 68.

The spelling of 33899949617 in words is "thirty-three billion, eight hundred ninety-nine million, nine hundred forty-nine thousand, six hundred seventeen".