80649878580000 has 480 divisors, whose sum is σ = 306722055024000. Its totient is φ = 20571560064000.

The previous prime is 80649878579993. The next prime is 80649878580013. The reversal of 80649878580000 is 8587894608.

80649878580000 is a `hidden beast` number, since 8 + 0 + 6 + 49 + 8 + 7 + 8 + 580 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a self number, because there is not a number n which added to its sum of digits gives 80649878580000.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9173226 + ... + 15666774.

It is an arithmetic number, because the mean of its divisors is an integer number (639004281300).

Almost surely, 2^{80649878580000} is an apocalyptic number.

80649878580000 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 80649878580000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153361027512000).

80649878580000 is an abundant number, since it is smaller than the sum of its proper divisors (226072176444000).

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

80649878580000 is a wasteful number, since it uses less digits than its factorization.

80649878580000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6493611 (or 6493582 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 63.

The spelling of 80649878580000 in words is "eighty trillion, six hundred forty-nine billion, eight hundred seventy-eight million, five hundred eighty thousand".