994288642664 has 64 divisors (see below), whose sum is σ = 1915026079680. Its totient is φ = 483683904000.

The previous prime is 994288642663. The next prime is 994288642693. The reversal of 994288642664 is 466246882499.

It is a junction number, because it is equal to n+sod(n) for n = 994288642594 and 994288642603.

It is not an unprimeable number, because it can be changed into a prime (994288642663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210518207 + ... + 210522929.

It is an arithmetic number, because the mean of its divisors is an integer number (29922282495).

Almost surely, 2^994288642664 is an apocalyptic number.

It is an amenable number.

994288642664 is a deficient number, since it is larger than the sum of its proper divisors (920737437016).

994288642664 is a wasteful number, since it uses less digits than its factorization.

994288642664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6402 (or 6398 counting only the distinct ones).

The product of its digits is 286654464, while the sum is 68.

The spelling of 994288642664 in words is "nine hundred ninety-four billion, two hundred eighty-eight million, six hundred forty-two thousand, six hundred sixty-four".