17331996661 has 4 divisors (see below), whose sum is σ = 19807996192. Its totient is φ = 14855997132.

The previous prime is 17331996641. The next prime is 17331996697. The reversal of 17331996661 is 16669913371.

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 17331996661 - 2⁵ = 17331996629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17331996599 and 17331996608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17331996601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1237999755 + ... + 1237999768.

It is an arithmetic number, because the mean of its divisors is an integer number (4951999048).

Almost surely, 2^17331996661 is an apocalyptic number.

It is an amenable number.

17331996661 is a deficient number, since it is larger than the sum of its proper divisors (2475999531).

17331996661 is an equidigital number, since it uses as much as digits as its factorization.

17331996661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475999530.

The product of its digits is 1102248, while the sum is 52.

The spelling of 17331996661 in words is "seventeen billion, three hundred thirty-one million, nine hundred ninety-six thousand, six hundred sixty-one".