123354523322215 has 4 divisors (see below), whose sum is σ = 148025427986664. Its totient is φ = 98683618657768.

The previous prime is 123354523322213. The next prime is 123354523322287. The reversal of 123354523322215 is 512223325453321.

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 123354523322215 - 2¹ = 123354523322213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123354523322213) 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 in 3 ways as a sum of consecutive naturals, for example, 12335452332217 + ... + 12335452332226.

It is an arithmetic number, because the mean of its divisors is an integer number (37006356996666).

Almost surely, 2^{123354523322215} is an apocalyptic number.

123354523322215 is a deficient number, since it is larger than the sum of its proper divisors (24670904664449).

123354523322215 is an equidigital number, since it uses as much as digits as its factorization.

123354523322215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24670904664448.

The product of its digits is 1296000, while the sum is 43.

Adding to 123354523322215 its reverse (512223325453321), we get a palindrome (635577848775536).

The spelling of 123354523322215 in words is "one hundred twenty-three trillion, three hundred fifty-four billion, five hundred twenty-three million, three hundred twenty-two thousand, two hundred fifteen".