664999110544 has 20 divisors (see below), whose sum is σ = 1288723320496. Its totient is φ = 332425350432.

The previous prime is 664999110533. The next prime is 664999110593. The reversal of 664999110544 is 445011999466.

It is a super-2 number, since 2×664999110544² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4563834 + ... + 4707289.

Almost surely, 2^664999110544 is an apocalyptic number.

It is an amenable number.

664999110544 is a deficient number, since it is larger than the sum of its proper divisors (623724209952).

664999110544 is a wasteful number, since it uses less digits than its factorization.

664999110544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9275614 (or 9275608 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 664999110544 in words is "six hundred sixty-four billion, nine hundred ninety-nine million, one hundred ten thousand, five hundred forty-four".