123146455808 has 54 divisors (see below), whose sum is σ = 246641261076. Its totient is φ = 61366168576.

The previous prime is 123146455787. The next prime is 123146455853. The reversal of 123146455808 is 808554641321.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25722791 + ... + 25727577.

Almost surely, 2^123146455808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123146455808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123320630538).

123146455808 is an abundant number, since it is smaller than the sum of its proper divisors (123494805268).

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

123146455808 is an frugal number, since it uses more digits than its factorization.

123146455808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5437 (or 5106 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 123146455808 in words is "one hundred twenty-three billion, one hundred forty-six million, four hundred fifty-five thousand, eight hundred eight".