123354512105245 has 16 divisors (see below), whose sum is σ = 149554940871168. Its totient is φ = 97663972953600.

The previous prime is 123354512105221. The next prime is 123354512105261. The reversal of 123354512105245 is 542501215453321.

It is not a de Polignac number, because 123354512105245 - 2⁷ = 123354512105117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17981152 + ... + 23875318.

It is an arithmetic number, because the mean of its divisors is an integer number (9347183804448).

Almost surely, 2^{123354512105245} is an apocalyptic number.

It is an amenable number.

123354512105245 is a deficient number, since it is larger than the sum of its proper divisors (26200428765923).

123354512105245 is an equidigital number, since it uses as much as digits as its factorization.

123354512105245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5937420.

The product of its (nonzero) digits is 720000, while the sum is 43.

Adding to 123354512105245 its reverse (542501215453321), we get a palindrome (665855727558566).

The spelling of 123354512105245 in words is "one hundred twenty-three trillion, three hundred fifty-four billion, five hundred twelve million, one hundred five thousand, two hundred forty-five".