123300435515055 has 16 divisors (see below), whose sum is σ = 197287656013824. Its totient is φ = 65757912544800.

The previous prime is 123300435514987. The next prime is 123300435515093. The reversal of 123300435515055 is 550515534003321.

It is not a de Polignac number, because 123300435515055 - 2¹¹ = 123300435513007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123300435514998 and 123300435515016.

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, 144543679 + ... + 145394208.

It is an arithmetic number, because the mean of its divisors is an integer number (12330478500864).

Almost surely, 2^{123300435515055} is an apocalyptic number.

123300435515055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123300435515055 is a deficient number, since it is larger than the sum of its proper divisors (73987220498769).

123300435515055 is a wasteful number, since it uses less digits than its factorization.

123300435515055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289966246.

The product of its (nonzero) digits is 675000, while the sum is 42.

Adding to 123300435515055 its reverse (550515534003321), we get a palindrome (673815969518376).

The spelling of 123300435515055 in words is "one hundred twenty-three trillion, three hundred billion, four hundred thirty-five million, five hundred fifteen thousand, fifty-five".