123455342003505 has 16 divisors (see below), whose sum is σ = 198231495778944. Its totient is φ = 65608532877440.

The previous prime is 123455342003501. The next prime is 123455342003569. The reversal of 123455342003505 is 505300243554321.

It is not a de Polignac number, because 123455342003505 - 2² = 123455342003501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123455342003501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14644757589 + ... + 14644766018.

It is an arithmetic number, because the mean of its divisors is an integer number (12389468486184).

Almost surely, 2^{123455342003505} is an apocalyptic number.

123455342003505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123455342003505 is a deficient number, since it is larger than the sum of its proper divisors (74776153775439).

123455342003505 is a wasteful number, since it uses less digits than its factorization.

123455342003505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29289523896.

The product of its (nonzero) digits is 1080000, while the sum is 42.

Adding to 123455342003505 its reverse (505300243554321), we get a palindrome (628755585557826).

The spelling of 123455342003505 in words is "one hundred twenty-three trillion, four hundred fifty-five billion, three hundred forty-two million, three thousand, five hundred five".