33806911709 has 4 divisors (see below), whose sum is σ = 34897457280. Its totient is φ = 32716366140.

The previous prime is 33806911703. The next prime is 33806911741. The reversal of 33806911709 is 90711960833.

It is a happy number.

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: 90711960833 = 13 ⋅6977843141.

It is a cyclic number.

It is not a de Polignac number, because 33806911709 - 2⁴ = 33806911693 is a prime.

It is a super-2 number, since 2×33806911709² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33806911703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545272739 + ... + 545272800.

It is an arithmetic number, because the mean of its divisors is an integer number (8724364320).

Almost surely, 2^33806911709 is an apocalyptic number.

It is an amenable number.

33806911709 is a deficient number, since it is larger than the sum of its proper divisors (1090545571).

33806911709 is a wasteful number, since it uses less digits than its factorization.

33806911709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090545570.

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 33806911709 in words is "thirty-three billion, eight hundred six million, nine hundred eleven thousand, seven hundred nine".