1306112006666 has 4 divisors (see below), whose sum is σ = 1959168010002. Its totient is φ = 653056003332.

The previous prime is 1306112006623. The next prime is 1306112006761. The reversal of 1306112006666 is 6666002116031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1051065796225 + 255046210441 = 1025215^2 + 505021^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 326528001665 + ... + 326528001668.

Almost surely, 2^{1306112006666} is an apocalyptic number.

1306112006666 is a deficient number, since it is larger than the sum of its proper divisors (653056003336).

1306112006666 is an equidigital number, since it uses as much as digits as its factorization.

1306112006666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653056003335.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 1306112006666 in words is "one trillion, three hundred six billion, one hundred twelve million, six thousand, six hundred sixty-six".