123345002605 has 16 divisors (see below), whose sum is σ = 163134465984. Its totient is φ = 88780654080.

The previous prime is 123345002597. The next prime is 123345002639. The reversal of 123345002605 is 506200543321.

It is a happy number.

It is not a de Polignac number, because 123345002605 - 2³ = 123345002597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11554647 + ... + 11565316.

It is an arithmetic number, because the mean of its divisors is an integer number (10195904124).

Almost surely, 2^123345002605 is an apocalyptic number.

It is an amenable number.

123345002605 is a deficient number, since it is larger than the sum of its proper divisors (39789463379).

123345002605 is a wasteful number, since it uses less digits than its factorization.

123345002605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23120076.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 123345002605 its reverse (506200543321), we get a palindrome (629545545926).

The spelling of 123345002605 in words is "one hundred twenty-three billion, three hundred forty-five million, two thousand, six hundred five".