66648466484666 has 32 divisors (see below), whose sum is σ = 109602993010176. Its totient is φ = 30144304638000.

The previous prime is 66648466484651. The next prime is 66648466484681.

66648466484666 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (66648466484651) and next prime (66648466484681).

It is a super-2 number, since 2×66648466484666² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18748121 + ... + 22017923.

It is an arithmetic number, because the mean of its divisors is an integer number (3425093531568).

Almost surely, 2^{66648466484666} is an apocalyptic number.

66648466484666 is a deficient number, since it is larger than the sum of its proper divisors (42954526525510).

66648466484666 is a wasteful number, since it uses less digits than its factorization.

66648466484666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274418.

The product of its digits is 27518828544, while the sum is 80.

The spelling of 66648466484666 in words is "sixty-six trillion, six hundred forty-eight billion, four hundred sixty-six million, four hundred eighty-four thousand, six hundred sixty-six".