66144255412145 has 8 divisors (see below), whose sum is σ = 79445461201704. Its totient is φ = 52867167858304.

The previous prime is 66144255412129. The next prime is 66144255412171. The reversal of 66144255412145 is 54121455244166.

It can be written as a sum of positive squares in 4 ways, for example, as 1193615245729 + 64950640166416 = 1092527^2 + 8059196^2 .

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 66144255412145 - 2⁴ = 66144255412129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66144255412093 and 66144255412102.

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, 6029552894 + ... + 6029563863.

It is an arithmetic number, because the mean of its divisors is an integer number (9930682650213).

Almost surely, 2^{66144255412145} is an apocalyptic number.

It is an amenable number.

66144255412145 is a deficient number, since it is larger than the sum of its proper divisors (13301205789559).

66144255412145 is a wasteful number, since it uses less digits than its factorization.

66144255412145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12059117859.

The product of its digits is 4608000, while the sum is 50.

The spelling of 66144255412145 in words is "sixty-six trillion, one hundred forty-four billion, two hundred fifty-five million, four hundred twelve thousand, one hundred forty-five".