80661204886140 has 48 divisors (see below), whose sum is σ = 250945970758560. Its totient is φ = 21509654636160.

The previous prime is 80661204886081. The next prime is 80661204886169. The reversal of 80661204886140 is 4168840216608.

It is a happy number.

80661204886140 is a `hidden beast` number, since 8 + 0 + 6 + 6 + 12 + 0 + 4 + 8 + 8 + 614 + 0 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 74686300281 + ... + 74686301360.

It is an arithmetic number, because the mean of its divisors is an integer number (5228041057470).

Almost surely, 2^{80661204886140} is an apocalyptic number.

It is an amenable number.

80661204886140 is an abundant number, since it is smaller than the sum of its proper divisors (170284765872420).

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

80661204886140 is a wasteful number, since it uses less digits than its factorization.

80661204886140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149372601659 (or 149372601651 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 54.

The spelling of 80661204886140 in words is "eighty trillion, six hundred sixty-one billion, two hundred four million, eight hundred eighty-six thousand, one hundred forty".