345213212543 has 4 divisors (see below), whose sum is σ = 352558174560. Its totient is φ = 337868250528.

The previous prime is 345213212483. The next prime is 345213212557. The reversal of 345213212543 is 345212312543.

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 345213212543 - 2⁶ = 345213212479 is a prime.

It is a super-2 number, since 2×345213212543² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345213217543) 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, 3672480938 + ... + 3672481031.

It is an arithmetic number, because the mean of its divisors is an integer number (88139543640).

Almost surely, 2^345213212543 is an apocalyptic number.

345213212543 is a deficient number, since it is larger than the sum of its proper divisors (7344962017).

345213212543 is an equidigital number, since it uses as much as digits as its factorization.

345213212543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7344962016.

The product of its digits is 86400, while the sum is 35.

The spelling of 345213212543 in words is "three hundred forty-five billion, two hundred thirteen million, two hundred twelve thousand, five hundred forty-three".