123345313354545 has 16 divisors (see below), whose sum is σ = 197381400711360. Its totient is φ = 65774534007744.

The previous prime is 123345313354531. The next prime is 123345313354607. The reversal of 123345313354545 is 545453313543321.

It is not a de Polignac number, because 123345313354545 - 2²⁹ = 123344776483633 is a prime.

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, 601963819 + ... + 602168688.

It is an arithmetic number, because the mean of its divisors is an integer number (12336337544460).

Almost surely, 2^{123345313354545} is an apocalyptic number.

123345313354545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123345313354545 is a deficient number, since it is larger than the sum of its proper divisors (74036087356815).

123345313354545 is a wasteful number, since it uses less digits than its factorization.

123345313354545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204139344.

The product of its digits is 19440000, while the sum is 51.

Adding to 123345313354545 its reverse (545453313543321), we get a palindrome (668798626897866).

The spelling of 123345313354545 in words is "one hundred twenty-three trillion, three hundred forty-five billion, three hundred thirteen million, three hundred fifty-four thousand, five hundred forty-five".