123217451328 has 56 divisors (see below), whose sum is σ = 337254677280. Its totient is φ = 39656189440.

The previous prime is 123217451311. The next prime is 123217451377. The reversal of 123217451328 is 823154712321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11059218 + ... + 11070353.

Almost surely, 2^123217451328 is an apocalyptic number.

It is an amenable number.

123217451328 is an abundant number, since it is smaller than the sum of its proper divisors (214037225952).

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

123217451328 is a wasteful number, since it uses less digits than its factorization.

123217451328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22129615 (or 22129605 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The spelling of 123217451328 in words is "one hundred twenty-three billion, two hundred seventeen million, four hundred fifty-one thousand, three hundred twenty-eight".