813553355318 has 16 divisors (see below), whose sum is σ = 1331689332240. Its totient is φ = 369680256000.

The previous prime is 813553355309. The next prime is 813553355327.

813553355318 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (813553355309) and next prime (813553355327).

It is a super-2 number, since 2×813553355318² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5764883 + ... + 5904318.

It is an arithmetic number, because the mean of its divisors is an integer number (83230583265).

Almost surely, 2^813553355318 is an apocalyptic number.

813553355318 is a deficient number, since it is larger than the sum of its proper divisors (518135976922).

813553355318 is a wasteful number, since it uses less digits than its factorization.

813553355318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11672383.

The product of its digits is 3240000, while the sum is 50.

The spelling of 813553355318 in words is "eight hundred thirteen billion, five hundred fifty-three million, three hundred fifty-five thousand, three hundred eighteen".