66439433493466 has 32 divisors (see below), whose sum is σ = 109068773583168. Its totient is φ = 30102607616640.

The previous prime is 66439433493449. The next prime is 66439433493487.

66439433493466 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66439433493395 and 66439433493404.

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, 478280316 + ... + 478419208.

It is an arithmetic number, because the mean of its divisors is an integer number (3408399174474).

Almost surely, 2^{66439433493466} is an apocalyptic number.

66439433493466 is a deficient number, since it is larger than the sum of its proper divisors (42629340089702).

66439433493466 is a wasteful number, since it uses less digits than its factorization.

66439433493466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208686.

The product of its digits is 2176782336, while the sum is 70.

The spelling of 66439433493466 in words is "sixty-six trillion, four hundred thirty-nine billion, four hundred thirty-three million, four hundred ninety-three thousand, four hundred sixty-six".