33990168897 has 6 divisors (see below), whose sum is σ = 49096910642. Its totient is φ = 22660112592.

The previous prime is 33990168893. The next prime is 33990168977. The reversal of 33990168897 is 79886109933.

33990168897 is a `hidden beast` number, since 3 + 399 + 0 + 168 + 89 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 33397928001 + 592240896 = 182751^2 + 24336^2 .

It is not a de Polignac number, because 33990168897 - 2² = 33990168893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33990168893) 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 5 ways as a sum of consecutive naturals, for example, 1888342708 + ... + 1888342725.

Almost surely, 2^33990168897 is an apocalyptic number.

It is an amenable number.

33990168897 is a deficient number, since it is larger than the sum of its proper divisors (15106741745).

33990168897 is a wasteful number, since it uses less digits than its factorization.

33990168897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776685439 (or 3776685436 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 33990168897 in words is "thirty-three billion, nine hundred ninety million, one hundred sixty-eight thousand, eight hundred ninety-seven".