66017240080560 has 60 divisors (see below), whose sum is σ = 221707897939632. Its totient is φ = 17604597354624.

The previous prime is 66017240080541. The next prime is 66017240080609. The reversal of 66017240080560 is 6508004271066.

66017240080560 is a `hidden beast` number, since 6 + 6 + 0 + 1 + 7 + 2 + 4 + 0 + 0 + 80 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45845304892 + ... + 45845306331.

Almost surely, 2^{66017240080560} is an apocalyptic number.

66017240080560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66017240080560 is an abundant number, since it is smaller than the sum of its proper divisors (155690657859072).

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

66017240080560 is a wasteful number, since it uses less digits than its factorization.

66017240080560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91690611242 (or 91690611233 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 66017240080560 in words is "sixty-six trillion, seventeen billion, two hundred forty million, eighty thousand, five hundred sixty".