66000044000066 has 8 divisors (see below), whose sum is σ = 108000072000144. Its totient is φ = 30000020000020.

The previous prime is 66000043999999. The next prime is 66000044000081.

It is a happy number.

66000044000066 is nontrivially palindromic in base 10.

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

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66000043999996 and 66000044000041.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1500000999980 + ... + 1500001000023.

It is an arithmetic number, because the mean of its divisors is an integer number (13500009000018).

Almost surely, 2^{66000044000066} is an apocalyptic number.

66000044000066 is a deficient number, since it is larger than the sum of its proper divisors (42000028000078).

66000044000066 is a wasteful number, since it uses less digits than its factorization.

66000044000066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000002000016.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 66000044000066 in words is "sixty-six trillion, forty-four million, sixty-six", and thus it is an aban number and an eban number.