66485818500480 has 896 divisors, whose sum is σ = 247560620811840. Its totient is φ = 17053153689600.

The previous prime is 66485818500463. The next prime is 66485818500503. The reversal of 66485818500480 is 8400581858466.

66485818500480 is a `hidden beast` number, since 6 + 6 + 4 + 8 + 5 + 81 + 8 + 500 + 48 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1358131684 + ... + 1358180636.

Almost surely, 2^{66485818500480} is an apocalyptic number.

66485818500480 is a gapful number since it is divisible by the number (60) 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 66485818500480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123780310405920).

66485818500480 is an abundant number, since it is smaller than the sum of its proper divisors (181074802311360).

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

66485818500480 is an equidigital number, since it uses as much as digits as its factorization.

66485818500480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49102 (or 49075 counting only the distinct ones).

The product of its (nonzero) digits is 58982400, while the sum is 63.

The spelling of 66485818500480 in words is "sixty-six trillion, four hundred eighty-five billion, eight hundred eighteen million, five hundred thousand, four hundred eighty".