66664326145 has 8 divisors (see below), whose sum is σ = 79998656256. Its totient is φ = 53330484336.

The previous prime is 66664326107. The next prime is 66664326161. The reversal of 66664326145 is 54162346666.

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

It is a cyclic number.

It is not a de Polignac number, because 66664326145 - 2¹⁹ = 66663801857 is a prime.

It is a super-2 number, since 2×66664326145² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331474 + ... + 493156.

It is an arithmetic number, because the mean of its divisors is an integer number (9999832032).

Almost surely, 2^66664326145 is an apocalyptic number.

It is an amenable number.

66664326145 is a deficient number, since it is larger than the sum of its proper divisors (13334330111).

66664326145 is a wasteful number, since it uses less digits than its factorization.

66664326145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244151.

The product of its digits is 3732480, while the sum is 49.

The spelling of 66664326145 in words is "sixty-six billion, six hundred sixty-four million, three hundred twenty-six thousand, one hundred forty-five".