123354221564 has 12 divisors (see below), whose sum is σ = 246708443184. Its totient is φ = 52866094944.

The previous prime is 123354221537. The next prime is 123354221581. The reversal of 123354221564 is 465122453321.

123354221564 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

123354221564 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2202753929 + ... + 2202753984.

It is an arithmetic number, because the mean of its divisors is an integer number (20559036932).

Almost surely, 2^123354221564 is an apocalyptic number.

123354221564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123354221564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

123354221564 is a wasteful number, since it uses less digits than its factorization.

123354221564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405507924 (or 4405507922 counting only the distinct ones).

The product of its digits is 172800, while the sum is 38.

Adding to 123354221564 its reverse (465122453321), we get a palindrome (588476674885).

The spelling of 123354221564 in words is "one hundred twenty-three billion, three hundred fifty-four million, two hundred twenty-one thousand, five hundred sixty-four".