2002660666313 has 2 divisors, whose sum is σ = 2002660666314. Its totient is φ = 2002660666312.

The previous prime is 2002660666283. The next prime is 2002660666403. The reversal of 2002660666313 is 3136660662002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1886521479049 + 116139187264 = 1373507^2 + 340792^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002660666313 - 2⁸ = 2002660666057 is a prime.

It is not a weakly prime, because it can be changed into another prime (2002660666613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001330333156 + 1001330333157.

It is an arithmetic number, because the mean of its divisors is an integer number (1001330333157).

Almost surely, 2^{2002660666313} is an apocalyptic number.

It is an amenable number.

2002660666313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002660666313 is an equidigital number, since it uses as much as digits as its factorization.

2002660666313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 2002660666313 in words is "two trillion, two billion, six hundred sixty million, six hundred sixty-six thousand, three hundred thirteen".