1366689315186 has 24 divisors (see below), whose sum is σ = 3188941735980. Its totient is φ = 420519789216.

The previous prime is 1366689315163. The next prime is 1366689315197. The reversal of 1366689315186 is 6815139866631.

It can be written as a sum of positive squares in 2 ways, for example, as 1318236941025 + 48452374161 = 1148145^2 + 220119^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2920276081 + ... + 2920276548.

Almost surely, 2^{1366689315186} is an apocalyptic number.

1366689315186 is an abundant number, since it is smaller than the sum of its proper divisors (1822252420794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1366689315186 is a wasteful number, since it uses less digits than its factorization.

1366689315186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5840552650 (or 5840552647 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 63.

The spelling of 1366689315186 in words is "one trillion, three hundred sixty-six billion, six hundred eighty-nine million, three hundred fifteen thousand, one hundred eighty-six".