345215512543 has 4 divisors (see below), whose sum is σ = 376598740968. Its totient is φ = 313832284120.

The previous prime is 345215512511. The next prime is 345215512583.

345215512543 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 345215512543 - 2⁵ = 345215512511 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345215512496 and 345215512505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345215512583) 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, 15691614196 + ... + 15691614217.

It is an arithmetic number, because the mean of its divisors is an integer number (94149685242).

Almost surely, 2^345215512543 is an apocalyptic number.

345215512543 is a deficient number, since it is larger than the sum of its proper divisors (31383228425).

345215512543 is a wasteful number, since it uses less digits than its factorization.

345215512543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31383228424.

The product of its digits is 360000, while the sum is 40.

It can be divided in two parts, 345215 and 512543, that added together give a palindrome (857758).

The spelling of 345215512543 in words is "three hundred forty-five billion, two hundred fifteen million, five hundred twelve thousand, five hundred forty-three".