1306861666336 has 24 divisors (see below), whose sum is σ = 2573561754540. Its totient is φ = 653258681088.

The previous prime is 1306861666277. The next prime is 1306861666351. The reversal of 1306861666336 is 6336661686031.

It can be written as a sum of positive squares in 2 ways, for example, as 1065147843600 + 241713822736 = 1032060^2 + 491644^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5256351 + ... + 5499358.

Almost surely, 2^{1306861666336} is an apocalyptic number.

1306861666336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1306861666336 is a deficient number, since it is larger than the sum of its proper divisors (1266700088204).

1306861666336 is a wasteful number, since it uses less digits than its factorization.

1306861666336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10759516 (or 10759508 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 55.

The spelling of 1306861666336 in words is "one trillion, three hundred six billion, eight hundred sixty-one million, six hundred sixty-six thousand, three hundred thirty-six".