1213416818823 has 16 divisors (see below), whose sum is σ = 1775172064896. Its totient is φ = 731153238240.

The previous prime is 1213416818777. The next prime is 1213416818833. The reversal of 1213416818823 is 3288186143121.

It is not a de Polignac number, because 1213416818823 - 2¹³ = 1213416810631 is a prime.

It is a super-3 number, since 3×1213416818823³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213416818833) 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 15 ways as a sum of consecutive naturals, for example, 106266565 + ... + 106277982.

It is an arithmetic number, because the mean of its divisors is an integer number (110948254056).

Almost surely, 2^{1213416818823} is an apocalyptic number.

1213416818823 is a deficient number, since it is larger than the sum of its proper divisors (561755246073).

1213416818823 is a wasteful number, since it uses less digits than its factorization.

1213416818823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212544734.

The product of its digits is 442368, while the sum is 48.

The spelling of 1213416818823 in words is "one trillion, two hundred thirteen billion, four hundred sixteen million, eight hundred eighteen thousand, eight hundred twenty-three".