1361205602066 has 8 divisors (see below), whose sum is σ = 2043237244620. Its totient is φ = 680126520528.

The previous prime is 1361205602027. The next prime is 1361205602101. The reversal of 1361205602066 is 6602065021631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 913115936041 + 448089666025 = 955571^2 + 669395^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238136681 + ... + 238142396.

Almost surely, 2^{1361205602066} is an apocalyptic number.

1361205602066 is a deficient number, since it is larger than the sum of its proper divisors (682031642554).

1361205602066 is a wasteful number, since it uses less digits than its factorization.

1361205602066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476280508.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 1361205602066 in words is "one trillion, three hundred sixty-one billion, two hundred five million, six hundred two thousand, sixty-six".