66884905734288 has 40 divisors (see below), whose sum is σ = 182949889216608. Its totient is φ = 20983499837952.

The previous prime is 66884905734221. The next prime is 66884905734343. The reversal of 66884905734288 is 88243750948866.

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 7 ways as a sum of consecutive naturals, for example, 40983397306 + ... + 40983398937.

Almost surely, 2^{66884905734288} is an apocalyptic number.

66884905734288 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

66884905734288 is an abundant number, since it is smaller than the sum of its proper divisors (116064983482320).

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

66884905734288 is a wasteful number, since it uses less digits than its factorization.

66884905734288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81966796271 (or 81966796265 counting only the distinct ones).

The product of its (nonzero) digits is 4459069440, while the sum is 78.

The spelling of 66884905734288 in words is "sixty-six trillion, eight hundred eighty-four billion, nine hundred five million, seven hundred thirty-four thousand, two hundred eighty-eight".