33996689892 has 144 divisors (see below), whose sum is σ = 98780136000. Its totient is φ = 9750170880.

The previous prime is 33996689891. The next prime is 33996689929. The reversal of 33996689892 is 29898669933.

33996689892 is a `hidden beast` number, since 3 + 399 + 6 + 68 + 98 + 92 = 666.

It is a super-2 number, since 2×33996689892² (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 33996689892.

It is not an unprimeable number, because it can be changed into a prime (33996689891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11653218 + ... + 11656134.

Almost surely, 2^33996689892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33996689892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49390068000).

33996689892 is an abundant number, since it is smaller than the sum of its proper divisors (64783446108).

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

33996689892 is a wasteful number, since it uses less digits than its factorization.

33996689892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506 (or 4501 counting only the distinct ones).

The product of its digits is 272097792, while the sum is 72.

The spelling of 33996689892 in words is "thirty-three billion, nine hundred ninety-six million, six hundred eighty-nine thousand, eight hundred ninety-two".