33947780868 has 72 divisors (see below), whose sum is σ = 87865345568. Its totient is φ = 11045559168.

The previous prime is 33947780861. The next prime is 33947780869. The reversal of 33947780868 is 86808774933.

33947780868 is a `hidden beast` number, since 3 + 3 + 9 + 477 + 80 + 86 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (33947780861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2698080 + ... + 2710632.

Almost surely, 2^33947780868 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 33947780868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43932672784).

33947780868 is an abundant number, since it is smaller than the sum of its proper divisors (53917564700).

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

33947780868 is a wasteful number, since it uses less digits than its factorization.

33947780868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14353 (or 14348 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 33947780868 in words is "thirty-three billion, nine hundred forty-seven million, seven hundred eighty thousand, eight hundred sixty-eight".