123605242506321 has 16 divisors (see below), whose sum is σ = 164852647977024. Its totient is φ = 82380666924864.

The previous prime is 123605242506311. The next prime is 123605242506359.

123605242506321 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 123605242506321 - 2¹¹ = 123605242504273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123605242506311) 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, 803948571 + ... + 804102303.

It is an arithmetic number, because the mean of its divisors is an integer number (10303290498564).

Almost surely, 2^{123605242506321} is an apocalyptic number.

It is an amenable number.

123605242506321 is a deficient number, since it is larger than the sum of its proper divisors (41247405470703).

123605242506321 is a wasteful number, since it uses less digits than its factorization.

123605242506321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226240.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 123605242506321 in words is "one hundred twenty-three trillion, six hundred five billion, two hundred forty-two million, five hundred six thousand, three hundred twenty-one".