66264854745645 has 24 divisors (see below), whose sum is σ = 119852954672256. Its totient is φ = 33804679521888.

The previous prime is 66264854745629. The next prime is 66264854745667. The reversal of 66264854745645 is 54654745846266.

66264854745645 is a `hidden beast` number, since 6 + 6 + 2 + 6 + 4 + 8 + 54 + 7 + 4 + 564 + 5 = 666.

It is not a de Polignac number, because 66264854745645 - 2⁴ = 66264854745629 is a prime.

It is a super-3 number, since 3×66264854745645³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32012006089 + ... + 32012008158.

It is an arithmetic number, because the mean of its divisors is an integer number (4993873111344).

Almost surely, 2^{66264854745645} is an apocalyptic number.

It is an amenable number.

66264854745645 is a deficient number, since it is larger than the sum of its proper divisors (53588099926611).

66264854745645 is a wasteful number, since it uses less digits than its factorization.

66264854745645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64024014281 (or 64024014278 counting only the distinct ones).

The product of its digits is 4644864000, while the sum is 72.

The spelling of 66264854745645 in words is "sixty-six trillion, two hundred sixty-four billion, eight hundred fifty-four million, seven hundred forty-five thousand, six hundred forty-five".