66325551034566 has 8 divisors (see below), whose sum is σ = 132651102069144. Its totient is φ = 22108517011520.

The previous prime is 66325551034549. The next prime is 66325551034621. The reversal of 66325551034566 is 66543015552366.

66325551034566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

66325551034566 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 5527129252875 + ... + 5527129252886.

It is an arithmetic number, because the mean of its divisors is an integer number (16581387758643).

Almost surely, 2^{66325551034566} is an apocalyptic number.

66325551034566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66325551034566 is a wasteful number, since it uses less digits than its factorization.

66325551034566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11054258505766.

The product of its (nonzero) digits is 58320000, while the sum is 57.

The spelling of 66325551034566 in words is "sixty-six trillion, three hundred twenty-five billion, five hundred fifty-one million, thirty-four thousand, five hundred sixty-six".