123345341155513 has 2 divisors, whose sum is σ = 123345341155514. Its totient is φ = 123345341155512.

The previous prime is 123345341155511. The next prime is 123345341155649. The reversal of 123345341155513 is 315551143543321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90765024676624 + 32580316478889 = 9527068^2 + 5707917^2 .

It is a cyclic number.

It is not a de Polignac number, because 123345341155513 - 2¹ = 123345341155511 is a prime.

Together with 123345341155511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123345341155511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61672670577756 + 61672670577757.

It is an arithmetic number, because the mean of its divisors is an integer number (61672670577757).

Almost surely, 2^{123345341155513} is an apocalyptic number.

It is an amenable number.

123345341155513 is a deficient number, since it is larger than the sum of its proper divisors (1).

123345341155513 is an equidigital number, since it uses as much as digits as its factorization.

123345341155513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620000, while the sum is 46.

Adding to 123345341155513 its reverse (315551143543321), we get a palindrome (438896484698834).

The spelling of 123345341155513 in words is "one hundred twenty-three trillion, three hundred forty-five billion, three hundred forty-one million, one hundred fifty-five thousand, five hundred thirteen".