123328399680 has 84 divisors (see below), whose sum is σ = 424198317972. Its totient is φ = 32887572480.

The previous prime is 123328399669. The next prime is 123328399721. The reversal of 123328399680 is 86993823321.

It is a happy number.

123328399680 is a `hidden beast` number, since 123 + 328 + 39 + 96 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 70751744064 + 52576655616 = 265992^2 + 229296^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21408301 + ... + 21414060.

Almost surely, 2^123328399680 is an apocalyptic number.

123328399680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123328399680 is an abundant number, since it is smaller than the sum of its proper divisors (300869918292).

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

123328399680 is a wasteful number, since it uses less digits than its factorization.

123328399680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42822384 (or 42822371 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 123328399680 in words is "one hundred twenty-three billion, three hundred twenty-eight million, three hundred ninety-nine thousand, six hundred eighty".