33809806020 has 48 divisors (see below), whose sum is σ = 97931856960. Its totient is φ = 8705053056.

The previous prime is 33809806013. The next prime is 33809806061. The reversal of 33809806020 is 2060890833.

It is a super-2 number, since 2×33809806020² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33809806020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9713722 + ... + 9717201.

It is an arithmetic number, because the mean of its divisors is an integer number (2040247020).

Almost surely, 2^33809806020 is an apocalyptic number.

33809806020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33809806020 is an abundant number, since it is smaller than the sum of its proper divisors (64122050940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33809806020 is a wasteful number, since it uses less digits than its factorization.

33809806020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19430964 (or 19430962 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 33809806020 in words is "thirty-three billion, eight hundred nine million, eight hundred six thousand, twenty".