2668165559 has 8 divisors (see below), whose sum is σ = 2744584752. Its totient is φ = 2592800640.

The previous prime is 2668165553. The next prime is 2668165583. The reversal of 2668165559 is 9555618662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2668165559 - 2²⁰ = 2667116983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2668165559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668165553) 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 7 ways as a sum of consecutive naturals, for example, 258434 + ... + 268559.

It is an arithmetic number, because the mean of its divisors is an integer number (343073094).

Almost surely, 2^2668165559 is an apocalyptic number.

2668165559 is a deficient number, since it is larger than the sum of its proper divisors (76419193).

2668165559 is an equidigital number, since it uses as much as digits as its factorization.

2668165559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527137.

The product of its digits is 3888000, while the sum is 53.

The square root of 2668165559 is about 51654.2888732388. The cubic root of 2668165559 is about 1386.9823185111.

The spelling of 2668165559 in words is "two billion, six hundred sixty-eight million, one hundred sixty-five thousand, five hundred fifty-nine".