64440733704446 has 16 divisors (see below), whose sum is σ = 105501382825968. Its totient is φ = 29276545512000.

The previous prime is 64440733704433. The next prime is 64440733704461.

64440733704446 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64440733704391 and 64440733704400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734809205 + ... + 734896896.

It is an arithmetic number, because the mean of its divisors is an integer number (6593836426623).

Almost surely, 2^{64440733704446} is an apocalyptic number.

64440733704446 is a deficient number, since it is larger than the sum of its proper divisors (41060649121522).

64440733704446 is a wasteful number, since it uses less digits than its factorization.

64440733704446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469708107.

The product of its (nonzero) digits is 65028096, while the sum is 56.

The spelling of 64440733704446 in words is "sixty-four trillion, four hundred forty billion, seven hundred thirty-three million, seven hundred four thousand, four hundred forty-six".