64664264064644 has 24 divisors (see below), whose sum is σ = 114799852601280. Its totient is φ = 31867373890016.

The previous prime is 64664264064637. The next prime is 64664264064679. The reversal of 64664264064644 is 44646046246646.

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, 383379464 + ... + 383548095.

It is an arithmetic number, because the mean of its divisors is an integer number (4783327191720).

Almost surely, 2^{64664264064644} is an apocalyptic number.

It is an amenable number.

64664264064644 is a deficient number, since it is larger than the sum of its proper divisors (50135588536636).

64664264064644 is a wasteful number, since it uses less digits than its factorization.

64664264064644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766927867 (or 766927865 counting only the distinct ones).

The product of its (nonzero) digits is 382205952, while the sum is 62.

The spelling of 64664264064644 in words is "sixty-four trillion, six hundred sixty-four billion, two hundred sixty-four million, sixty-four thousand, six hundred forty-four".