64660446006244 has 24 divisors (see below), whose sum is σ = 124027706015136. Its totient is φ = 29251817448000.

The previous prime is 64660446006239. The next prime is 64660446006251. The reversal of 64660446006244 is 44260064406646.

It is a junction number, because it is equal to n+sod(n) for n = 64660446006191 and 64660446006200.

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, 3482349937 + ... + 3482368504.

It is an arithmetic number, because the mean of its divisors is an integer number (5167821083964).

Almost surely, 2^{64660446006244} is an apocalyptic number.

It is an amenable number.

64660446006244 is a deficient number, since it is larger than the sum of its proper divisors (59367260008892).

64660446006244 is a wasteful number, since it uses less digits than its factorization.

64660446006244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6964718667 (or 6964718665 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 52.

The spelling of 64660446006244 in words is "sixty-four trillion, six hundred sixty billion, four hundred forty-six million, six thousand, two hundred forty-four".