66706668476160 has 288 divisors, whose sum is σ = 221648501932032. Its totient is φ = 17079072030720.

The previous prime is 66706668476153. The next prime is 66706668476171. The reversal of 66706668476160 is 6167486660766.

66706668476160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12911892 + ... + 17324268.

Almost surely, 2^{66706668476160} is an apocalyptic number.

66706668476160 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 66706668476160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110824250966016).

66706668476160 is an abundant number, since it is smaller than the sum of its proper divisors (154941833455872).

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

66706668476160 is a wasteful number, since it uses less digits than its factorization.

66706668476160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4412559 (or 4412545 counting only the distinct ones).

The product of its (nonzero) digits is 438939648, while the sum is 69.

The spelling of 66706668476160 in words is "sixty-six trillion, seven hundred six billion, six hundred sixty-eight million, four hundred seventy-six thousand, one hundred sixty".