123148205928 has 192 divisors, whose sum is σ = 382172414400. Its totient is φ = 36705398400.

The previous prime is 123148205903. The next prime is 123148205959. The reversal of 123148205928 is 829502841321.

123148205928 is a `hidden beast` number, since 1 + 2 + 31 + 4 + 8 + 20 + 592 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1555675 + ... + 1632917.

It is an arithmetic number, because the mean of its divisors is an integer number (1990481325).

Almost surely, 2^123148205928 is an apocalyptic number.

123148205928 is a gapful number since it is divisible by the number (18) 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 123148205928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191086207200).

123148205928 is an abundant number, since it is smaller than the sum of its proper divisors (259024208472).

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

123148205928 is a wasteful number, since it uses less digits than its factorization.

123148205928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77341 (or 77320 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 123148205928 in words is "one hundred twenty-three billion, one hundred forty-eight million, two hundred five thousand, nine hundred twenty-eight".