66358475478000 has 720 divisors, whose sum is σ = 255322600120224. Its totient is φ = 16654640947200.

The previous prime is 66358475477933. The next prime is 66358475478059. The reversal of 66358475478000 is 87457485366.

66358475478000 is a `hidden beast` number, since 6 + 6 + 3 + 5 + 8 + 4 + 7 + 547 + 80 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 140217772 + ... + 140690228.

Almost surely, 2^{66358475478000} is an apocalyptic number.

66358475478000 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 66358475478000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127661300060112).

66358475478000 is an abundant number, since it is smaller than the sum of its proper divisors (188964124642224).

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

66358475478000 is a wasteful number, since it uses less digits than its factorization.

66358475478000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472529 (or 472484 counting only the distinct ones).

The product of its (nonzero) digits is 135475200, while the sum is 63.

The spelling of 66358475478000 in words is "sixty-six trillion, three hundred fifty-eight billion, four hundred seventy-five million, four hundred seventy-eight thousand".