20334033309 has 4 divisors (see below), whose sum is σ = 27112044416. Its totient is φ = 13556022204.

The previous prime is 20334033277. The next prime is 20334033397. The reversal of 20334033309 is 90333043302.

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.

It is not a de Polignac number, because 20334033309 - 2⁵ = 20334033277 is a prime.

It is a super-2 number, since 2×20334033309² (a number of 21 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 (20334033409) 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, 3389005549 + ... + 3389005554.

It is an arithmetic number, because the mean of its divisors is an integer number (6778011104).

Almost surely, 2^20334033309 is an apocalyptic number.

It is an amenable number.

20334033309 is a deficient number, since it is larger than the sum of its proper divisors (6778011107).

20334033309 is an equidigital number, since it uses as much as digits as its factorization.

20334033309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6778011106.

The product of its (nonzero) digits is 17496, while the sum is 30.

The spelling of 20334033309 in words is "twenty billion, three hundred thirty-four million, thirty-three thousand, three hundred nine".