33663650161 has 4 divisors (see below), whose sum is σ = 33664507632. Its totient is φ = 33662792692.

The previous prime is 33663650099. The next prime is 33663650177. The reversal of 33663650161 is 16105636633.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33663650161 - 2²⁹ = 33126779249 is a prime.

It is a super-2 number, since 2×33663650161² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33663650261) 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 3 ways as a sum of consecutive naturals, for example, 366871 + ... + 449356.

It is an arithmetic number, because the mean of its divisors is an integer number (8416126908).

Almost surely, 2^33663650161 is an apocalyptic number.

It is an amenable number.

33663650161 is a deficient number, since it is larger than the sum of its proper divisors (857471).

33663650161 is an equidigital number, since it uses as much as digits as its factorization.

33663650161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857470.

The product of its (nonzero) digits is 174960, while the sum is 40.

The spelling of 33663650161 in words is "thirty-three billion, six hundred sixty-three million, six hundred fifty thousand, one hundred sixty-one".