1306066366205 has 16 divisors (see below), whose sum is σ = 1588888960560. Its totient is φ = 1030449397248.

The previous prime is 1306066366201. The next prime is 1306066366259. The reversal of 1306066366205 is 5026636606031.

It can be written as a sum of positive squares in 8 ways, for example, as 66912238276 + 1239154127929 = 258674^2 + 1113173^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306066366205 - 2² = 1306066366201 is a prime.

It is a super-2 number, since 2×1306066366205² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306066366201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4160291 + ... + 4463199.

It is an arithmetic number, because the mean of its divisors is an integer number (99305560035).

Almost surely, 2^{1306066366205} is an apocalyptic number.

It is an amenable number.

1306066366205 is a deficient number, since it is larger than the sum of its proper divisors (282822594355).

1306066366205 is a wasteful number, since it uses less digits than its factorization.

1306066366205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314800.

The product of its (nonzero) digits is 699840, while the sum is 44.

The spelling of 1306066366205 in words is "one trillion, three hundred six billion, sixty-six million, three hundred sixty-six thousand, two hundred five".