123351242405055 has 32 divisors (see below), whose sum is σ = 225973482889728. Its totient is φ = 56284908048000.

The previous prime is 123351242405021. The next prime is 123351242405101. The reversal of 123351242405055 is 550504242153321.

It is not a de Polignac number, because 123351242405055 - 2¹⁸ = 123351242142911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123351242404998 and 123351242405016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1085686021 + ... + 1085799630.

It is an arithmetic number, because the mean of its divisors is an integer number (7061671340304).

Almost surely, 2^{123351242405055} is an apocalyptic number.

123351242405055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123351242405055 is a deficient number, since it is larger than the sum of its proper divisors (102622240484673).

123351242405055 is a wasteful number, since it uses less digits than its factorization.

123351242405055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171486207.

The product of its (nonzero) digits is 720000, while the sum is 42.

Adding to 123351242405055 its reverse (550504242153321), we get a palindrome (673855484558376).

The spelling of 123351242405055 in words is "one hundred twenty-three trillion, three hundred fifty-one billion, two hundred forty-two million, four hundred five thousand, fifty-five".