345812218543 has 16 divisors (see below), whose sum is σ = 383534773632. Its totient is φ = 309139884000.

The previous prime is 345812218541. The next prime is 345812218559.

345812218543 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 345812218543 - 2¹ = 345812218541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345812218493 and 345812218502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345812218541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2566648 + ... + 2698018.

It is an arithmetic number, because the mean of its divisors is an integer number (23970923352).

Almost surely, 2^345812218543 is an apocalyptic number.

345812218543 is a deficient number, since it is larger than the sum of its proper divisors (37722555089).

345812218543 is a wasteful number, since it uses less digits than its factorization.

345812218543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135366.

The product of its digits is 921600, while the sum is 46.

The spelling of 345812218543 in words is "three hundred forty-five billion, eight hundred twelve million, two hundred eighteen thousand, five hundred forty-three".