80127986666640 has 960 divisors, whose sum is σ = 285844456783872. Its totient is φ = 18532800000000.

The previous prime is 80127986666633. The next prime is 80127986666711. The reversal of 80127986666640 is 4666668972108.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 22821982485 + ... + 22821985995.

Almost surely, 2^{80127986666640} is an apocalyptic number.

80127986666640 is a gapful number since it is divisible by the number (80) 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 80127986666640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142922228391936).

80127986666640 is an abundant number, since it is smaller than the sum of its proper divisors (205716470117232).

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

80127986666640 is a wasteful number, since it uses less digits than its factorization.

80127986666640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3932 (or 3915 counting only the distinct ones).

The product of its (nonzero) digits is 250822656, while the sum is 69.

The spelling of 80127986666640 in words is "eighty trillion, one hundred twenty-seven billion, nine hundred eighty-six million, six hundred sixty-six thousand, six hundred forty".