1366364999991 has 16 divisors (see below), whose sum is σ = 1847105492960. Its totient is φ = 898271700480.

The previous prime is 1366364999963. The next prime is 1366365000041. The reversal of 1366364999991 is 1999994636631.

It is not a de Polignac number, because 1366364999991 - 2⁶ = 1366364999927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366364995991) 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, 682365 + ... + 1788393.

It is an arithmetic number, because the mean of its divisors is an integer number (115444093310).

Almost surely, 2^{1366364999991} is an apocalyptic number.

1366364999991 is a deficient number, since it is larger than the sum of its proper divisors (480740492969).

1366364999991 is a wasteful number, since it uses less digits than its factorization.

1366364999991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111746.

The product of its digits is 459165024, while the sum is 75.

The spelling of 1366364999991 in words is "one trillion, three hundred sixty-six billion, three hundred sixty-four million, nine hundred ninety-nine thousand, nine hundred ninety-one".