66000417072 has 160 divisors (see below), whose sum is σ = 181588568064. Its totient is φ = 20619878400.

The previous prime is 66000417061. The next prime is 66000417121. The reversal of 66000417072 is 27071400066.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12495072 + ... + 12500352.

Almost surely, 2^66000417072 is an apocalyptic number.

66000417072 is a gapful number since it is divisible by the number (62) 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 66000417072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90794284032).

66000417072 is an abundant number, since it is smaller than the sum of its proper divisors (115588150992).

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

66000417072 is a wasteful number, since it uses less digits than its factorization.

66000417072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5587 (or 5581 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The spelling of 66000417072 in words is "sixty-six billion, four hundred seventeen thousand, seventy-two".