123386975712 has 1296 divisors, whose sum is σ = 495630049824. Its totient is φ = 28466380800.

The previous prime is 123386975689. The next prime is 123386975717. The reversal of 123386975712 is 217579683321.

123386975712 is a `hidden beast` number, since 1 + 2 + 3 + 3 + 8 + 69 + 7 + 571 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123386975717) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 1690232508 + ... + 1690232580.

It is an arithmetic number, because the mean of its divisors is an integer number (382430594).

Almost surely, 2^123386975712 is an apocalyptic number.

123386975712 is a gapful number since it is divisible by the number (12) 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 123386975712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247815024912).

123386975712 is an abundant number, since it is smaller than the sum of its proper divisors (372243074112).

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

123386975712 is a wasteful number, since it uses less digits than its factorization.

123386975712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 150 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The spelling of 123386975712 in words is "one hundred twenty-three billion, three hundred eighty-six million, nine hundred seventy-five thousand, seven hundred twelve".