33820397808 has 20 divisors (see below), whose sum is σ = 87369361128. Its totient is φ = 11273465920.

The previous prime is 33820397783. The next prime is 33820397827. The reversal of 33820397808 is 80879302833.

It is a super-2 number, since 2×33820397808² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352295763 + ... + 352295858.

Almost surely, 2^33820397808 is an apocalyptic number.

It is an amenable number.

33820397808 is an abundant number, since it is smaller than the sum of its proper divisors (53548963320).

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

33820397808 is a wasteful number, since it uses less digits than its factorization.

33820397808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704591632 (or 704591626 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 33820397808 in words is "thirty-three billion, eight hundred twenty million, three hundred ninety-seven thousand, eight hundred eight".