123936475520 has 256 divisors, whose sum is σ = 350857543680. Its totient is φ = 41269616640.

The previous prime is 123936475519. The next prime is 123936475609. The reversal of 123936475520 is 25574639321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11617709 + ... + 11628371.

It is an arithmetic number, because the mean of its divisors is an integer number (1370537280).

Almost surely, 2^123936475520 is an apocalyptic number.

123936475520 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 123936475520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175428771840).

123936475520 is an abundant number, since it is smaller than the sum of its proper divisors (226921068160).

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

123936475520 is a wasteful number, since it uses less digits than its factorization.

123936475520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10833 (or 10821 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 123936475520 in words is "one hundred twenty-three billion, nine hundred thirty-six million, four hundred seventy-five thousand, five hundred twenty".