1213609811369 has 8 divisors (see below), whose sum is σ = 1229510929920. Its totient is φ = 1197722167200.

The previous prime is 1213609811317. The next prime is 1213609811377. The reversal of 1213609811369 is 9631189063121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213609811369 is a prime.

It is a super-2 number, since 2×1213609811369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213609811399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3187217 + ... + 3547614.

It is an arithmetic number, because the mean of its divisors is an integer number (153688866240).

Almost surely, 2^{1213609811369} is an apocalyptic number.

It is an amenable number.

1213609811369 is a deficient number, since it is larger than the sum of its proper divisors (15901118551).

1213609811369 is an equidigital number, since it uses as much as digits as its factorization.

1213609811369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6737191.

The product of its (nonzero) digits is 419904, while the sum is 50.

The spelling of 1213609811369 in words is "one trillion, two hundred thirteen billion, six hundred nine million, eight hundred eleven thousand, three hundred sixty-nine".