123443355220345 has 8 divisors (see below), whose sum is σ = 148135498337664. Its totient is φ = 98752369460784.

The previous prime is 123443355220307. The next prime is 123443355220417. The reversal of 123443355220345 is 543022553344321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123443355220345 - 2¹¹ = 123443355218297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123443355220295 and 123443355220304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289104769 + ... + 289531438.

It is an arithmetic number, because the mean of its divisors is an integer number (18516937292208).

Almost surely, 2^{123443355220345} is an apocalyptic number.

It is an amenable number.

123443355220345 is a deficient number, since it is larger than the sum of its proper divisors (24692143117319).

123443355220345 is an equidigital number, since it uses as much as digits as its factorization.

123443355220345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578678879.

The product of its (nonzero) digits is 5184000, while the sum is 46.

The spelling of 123443355220345 in words is "one hundred twenty-three trillion, four hundred forty-three billion, three hundred fifty-five million, two hundred twenty thousand, three hundred forty-five".