123173223450 has 48 divisors (see below), whose sum is σ = 305493676320. Its totient is φ = 32843603520.

The previous prime is 123173223419. The next prime is 123173223469. The reversal of 123173223450 is 54322371321.

123173223450 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2573841 + ... + 2621259.

It is an arithmetic number, because the mean of its divisors is an integer number (6364451590).

Almost surely, 2^123173223450 is an apocalyptic number.

123173223450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123173223450 is an abundant number, since it is smaller than the sum of its proper divisors (182320452870).

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

123173223450 is a wasteful number, since it uses less digits than its factorization.

123173223450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64751 (or 64746 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

Adding to 123173223450 its reverse (54322371321), we get a palindrome (177495594771).

The spelling of 123173223450 in words is "one hundred twenty-three billion, one hundred seventy-three million, two hundred twenty-three thousand, four hundred fifty".