123116605400 has 96 divisors (see below), whose sum is σ = 297364241280. Its totient is φ = 47354112000.

The previous prime is 123116605379. The next prime is 123116605429. The reversal of 123116605400 is 4506611321.

It is a happy number.

123116605400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 910160 + ... + 1036640.

It is an arithmetic number, because the mean of its divisors is an integer number (3097544180).

Almost surely, 2^123116605400 is an apocalyptic number.

123116605400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123116605400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148682120640).

123116605400 is an abundant number, since it is smaller than the sum of its proper divisors (174247635880).

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

123116605400 is a wasteful number, since it uses less digits than its factorization.

123116605400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126685 (or 126676 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 123116605400 in words is "one hundred twenty-three billion, one hundred sixteen million, six hundred five thousand, four hundred".