2002660666399 has 8 divisors (see below), whose sum is σ = 2006143101648. Its totient is φ = 1999178472960.

The previous prime is 2002660666313. The next prime is 2002660666403. The reversal of 2002660666399 is 9936660662002.

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 2002660666399 - 2¹⁷ = 2002660535327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002660666199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26822079 + ... + 26896639.

It is an arithmetic number, because the mean of its divisors is an integer number (250767887706).

Almost surely, 2^{2002660666399} is an apocalyptic number.

2002660666399 is a deficient number, since it is larger than the sum of its proper divisors (3482435249).

2002660666399 is an equidigital number, since it uses as much as digits as its factorization.

2002660666399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120905.

The product of its (nonzero) digits is 7558272, while the sum is 55.

The spelling of 2002660666399 in words is "two trillion, two billion, six hundred sixty million, six hundred sixty-six thousand, three hundred ninety-nine".