123609754512 has 400 divisors, whose sum is σ = 384236835840. Its totient is φ = 38287033344.

The previous prime is 123609754511. The next prime is 123609754553. The reversal of 123609754512 is 215457906321.

123609754512 is a `hidden beast` number, since 1 + 2 + 3 + 6 + 0 + 97 + 545 + 12 = 666.

It is not an unprimeable number, because it can be changed into a prime (123609754511) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 143232193 + ... + 143233055.

Almost surely, 2^123609754512 is an apocalyptic number.

123609754512 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 123609754512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192118417920).

123609754512 is an abundant number, since it is smaller than the sum of its proper divisors (260627081328).

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

123609754512 is a wasteful number, since it uses less digits than its factorization.

123609754512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 123609754512 in words is "one hundred twenty-three billion, six hundred nine million, seven hundred fifty-four thousand, five hundred twelve".