64446622664446 has 8 divisors (see below), whose sum is σ = 105458109814584. Its totient is φ = 29293919392920.

The previous prime is 64446622664443. The next prime is 64446622664449.

It is a happy number.

64446622664446 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (64446622664443) and next prime (64446622664449).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64446622664443) 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, 1464695969625 + ... + 1464695969668.

It is an arithmetic number, because the mean of its divisors is an integer number (13182263726823).

Almost surely, 2^{64446622664446} is an apocalyptic number.

64446622664446 is a deficient number, since it is larger than the sum of its proper divisors (41011487150138).

64446622664446 is a wasteful number, since it uses less digits than its factorization.

64446622664446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2929391939306.

The product of its digits is 764411904, while the sum is 64.

The spelling of 64446622664446 in words is "sixty-four trillion, four hundred forty-six billion, six hundred twenty-two million, six hundred sixty-four thousand, four hundred forty-six".