128354278202680 has 64 divisors (see below), whose sum is σ = 289533490986240. Its totient is φ = 51210809920512.

The previous prime is 128354278202663. The next prime is 128354278202723. The reversal of 128354278202680 is 86202872453821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609575577 + ... + 609786103.

It is an arithmetic number, because the mean of its divisors is an integer number (4523960796660).

Almost surely, 2^{128354278202680} is an apocalyptic number.

128354278202680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128354278202680 is an abundant number, since it is smaller than the sum of its proper divisors (161179212783560).

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

128354278202680 is a wasteful number, since it uses less digits than its factorization.

128354278202680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249328 (or 249324 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 58.

The spelling of 128354278202680 in words is "one hundred twenty-eight trillion, three hundred fifty-four billion, two hundred seventy-eight million, two hundred two thousand, six hundred eighty".