66004642555445 has 8 divisors (see below), whose sum is σ = 86406077527200. Its totient is φ = 48003376403920.

The previous prime is 66004642555433. The next prime is 66004642555451. The reversal of 66004642555445 is 54455524640066.

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

It is not a de Polignac number, because 66004642555445 - 2¹⁶ = 66004642489909 is a prime.

It is a super-2 number, since 2×66004642555445² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600042204995 + ... + 600042205104.

It is an arithmetic number, because the mean of its divisors is an integer number (10800759690900).

Almost surely, 2^{66004642555445} is an apocalyptic number.

It is an amenable number.

66004642555445 is a deficient number, since it is larger than the sum of its proper divisors (20401434971755).

66004642555445 is a wasteful number, since it uses less digits than its factorization.

66004642555445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200084410115.

The product of its (nonzero) digits is 69120000, while the sum is 56.

The spelling of 66004642555445 in words is "sixty-six trillion, four billion, six hundred forty-two million, five hundred fifty-five thousand, four hundred forty-five".