6645774775466 has 8 divisors (see below), whose sum is σ = 9975438960384. Its totient is φ = 3320628455340.

The previous prime is 6645774775433. The next prime is 6645774775469.

6645774775466 is nontrivially palindromic in base 10.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6645774775393 and 6645774775402.

It is not an unprimeable number, because it can be changed into a prime (6645774775469) 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, 1129462520 + ... + 1129468403.

It is an arithmetic number, because the mean of its divisors is an integer number (1246929870048).

Almost surely, 2^{6645774775466} is an apocalyptic number.

6645774775466 is a deficient number, since it is larger than the sum of its proper divisors (3329664184918).

6645774775466 is a wasteful number, since it uses less digits than its factorization.

6645774775466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258932396.

The product of its digits is 4978713600, while the sum is 74.

The spelling of 6645774775466 in words is "six trillion, six hundred forty-five billion, seven hundred seventy-four million, seven hundred seventy-five thousand, four hundred sixty-six".