1366266996779 has 4 divisors (see below), whose sum is σ = 1370717378184. Its totient is φ = 1361816615376.

The previous prime is 1366266996733. The next prime is 1366266996791. The reversal of 1366266996779 is 9776996626631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1366266996779 - 2¹² = 1366266992683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1366266996379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2225190242 + ... + 2225190855.

It is an arithmetic number, because the mean of its divisors is an integer number (342679344546).

Almost surely, 2^{1366266996779} is an apocalyptic number.

1366266996779 is a deficient number, since it is larger than the sum of its proper divisors (4450381405).

1366266996779 is an equidigital number, since it uses as much as digits as its factorization.

1366266996779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450381404.

The product of its digits is 1666598976, while the sum is 77.

The spelling of 1366266996779 in words is "one trillion, three hundred sixty-six billion, two hundred sixty-six million, nine hundred ninety-six thousand, seven hundred seventy-nine".