123205344240366 has 48 divisors (see below), whose sum is σ = 267121046694528. Its totient is φ = 41041359450000.

The previous prime is 123205344240331. The next prime is 123205344240427. The reversal of 123205344240366 is 663042443502321.

123205344240366 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 0 + 5 + 3 + 44 + 240 + 366 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166465575 + ... + 167204061.

It is an arithmetic number, because the mean of its divisors is an integer number (5565021806136).

Almost surely, 2^{123205344240366} is an apocalyptic number.

123205344240366 is an abundant number, since it is smaller than the sum of its proper divisors (143915702454162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123205344240366 is a wasteful number, since it uses less digits than its factorization.

123205344240366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744597 (or 744594 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 45.

Adding to 123205344240366 its reverse (663042443502321), we get a palindrome (786247787742687).

The spelling of 123205344240366 in words is "one hundred twenty-three trillion, two hundred five billion, three hundred forty-four million, two hundred forty thousand, three hundred sixty-six".