66449244294466 has 64 divisors (see below), whose sum is σ = 111868022318976. Its totient is φ = 29341657497600.

The previous prime is 66449244294451. The next prime is 66449244294467.

66449244294466 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66449244294395 and 66449244294404.

It is not an unprimeable number, because it can be changed into a prime (66449244294467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 774270390 + ... + 774356206.

It is an arithmetic number, because the mean of its divisors is an integer number (1747937848734).

Almost surely, 2^{66449244294466} is an apocalyptic number.

66449244294466 is a deficient number, since it is larger than the sum of its proper divisors (45418778024510).

66449244294466 is a wasteful number, since it uses less digits than its factorization.

66449244294466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90307.

The product of its digits is 1719926784, while the sum is 70.

The spelling of 66449244294466 in words is "sixty-six trillion, four hundred forty-nine billion, two hundred forty-four million, two hundred ninety-four thousand, four hundred sixty-six".