64664361336112 has 40 divisors (see below), whose sum is σ = 125318778727680. Its totient is φ = 32324032319040.

The previous prime is 64664361336109. The next prime is 64664361336149. The reversal of 64664361336112 is 21163316346646.

It is a self number, because there is not a number n which added to its sum of digits gives 64664361336112.

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, 1809737287 + ... + 1809773017.

It is an arithmetic number, because the mean of its divisors is an integer number (3132969468192).

Almost surely, 2^{64664361336112} is an apocalyptic number.

It is an amenable number.

64664361336112 is a deficient number, since it is larger than the sum of its proper divisors (60654417391568).

64664361336112 is a wasteful number, since it uses less digits than its factorization.

64664361336112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61081 (or 61075 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 52.

The spelling of 64664361336112 in words is "sixty-four trillion, six hundred sixty-four billion, three hundred sixty-one million, three hundred thirty-six thousand, one hundred twelve".