66444444444466 has 8 divisors (see below), whose sum is σ = 108727272727344. Its totient is φ = 30202020202020.

The previous prime is 66444444444461. The next prime is 66444444444491.

66444444444466 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 = 66444444444398 and 66444444444407.

It is not an unprimeable number, because it can be changed into a prime (66444444444461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1510101010080 + ... + 1510101010123.

It is an arithmetic number, because the mean of its divisors is an integer number (13590909090918).

Almost surely, 2^{66444444444466} is an apocalyptic number.

66444444444466 is a deficient number, since it is larger than the sum of its proper divisors (42282828282878).

66444444444466 is a wasteful number, since it uses less digits than its factorization.

66444444444466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020202020216.

The product of its digits is 1358954496, while the sum is 64.

The spelling of 66444444444466 in words is "sixty-six trillion, four hundred forty-four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred sixty-six".