1361202216609 has 4 divisors (see below), whose sum is σ = 1814936288816. Its totient is φ = 907468144404.

The previous prime is 1361202216581. The next prime is 1361202216617. The reversal of 1361202216609 is 9066122021631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1361202216609 - 2⁹ = 1361202216097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361202216109) 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, 226867036099 + ... + 226867036104.

It is an arithmetic number, because the mean of its divisors is an integer number (453734072204).

Almost surely, 2^{1361202216609} is an apocalyptic number.

It is an amenable number.

1361202216609 is a deficient number, since it is larger than the sum of its proper divisors (453734072207).

1361202216609 is an equidigital number, since it uses as much as digits as its factorization.

1361202216609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453734072206.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 1361202216609 in words is "one trillion, three hundred sixty-one billion, two hundred two million, two hundred sixteen thousand, six hundred nine".