6445442445446 has 8 divisors (see below), whose sum is σ = 9670459611384. Its totient is φ = 3221955908320.

The previous prime is 6445442445427. The next prime is 6445442445493.

6445442445446 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×6445442445446² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6445442445391 and 6445442445400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382646675 + ... + 382663518.

It is an arithmetic number, because the mean of its divisors is an integer number (1208807451423).

Almost surely, 2^{6445442445446} is an apocalyptic number.

6445442445446 is a deficient number, since it is larger than the sum of its proper divisors (3225017165938).

6445442445446 is a wasteful number, since it uses less digits than its factorization.

6445442445446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765314406.

The product of its digits is 117964800, while the sum is 56.

The spelling of 6445442445446 in words is "six trillion, four hundred forty-five billion, four hundred forty-two million, four hundred forty-five thousand, four hundred forty-six".