613345404443 has 2 divisors, whose sum is σ = 613345404444. Its totient is φ = 613345404442.

The previous prime is 613345404433. The next prime is 613345404479. The reversal of 613345404443 is 344404543316.

613345404443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-613345404443 is a prime.

It is a super-4 number, since 4×613345404443⁴ (a number of 48 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 613345404443.

It is not a weakly prime, because it can be changed into another prime (613345404433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306672702221 + 306672702222.

It is an arithmetic number, because the mean of its divisors is an integer number (306672702222).

Almost surely, 2^613345404443 is an apocalyptic number.

613345404443 is a deficient number, since it is larger than the sum of its proper divisors (1).

613345404443 is an equidigital number, since it uses as much as digits as its factorization.

613345404443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 41.

Adding to 613345404443 its reverse (344404543316), we get a palindrome (957749947759).

The spelling of 613345404443 in words is "six hundred thirteen billion, three hundred forty-five million, four hundred four thousand, four hundred forty-three".