648612999999 has 6 divisors (see below), whose sum is σ = 936885444456. Its totient is φ = 432408666660.

The previous prime is 648612999949. The next prime is 648613000001. The reversal of 648612999999 is 999999216846.

648612999999 is a `hidden beast` number, since 6 + 486 + 129 + 9 + 9 + 9 + 9 + 9 = 666.

It is not a de Polignac number, because 648612999999 - 2⁹ = 648612999487 is a prime.

648612999999 is a modest number, since divided by 999999 gives 648612 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648612999949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36034055547 + ... + 36034055564.

It is an arithmetic number, because the mean of its divisors is an integer number (156147574076).

Almost surely, 2^648612999999 is an apocalyptic number.

648612999999 is a deficient number, since it is larger than the sum of its proper divisors (288272444457).

648612999999 is a wasteful number, since it uses less digits than its factorization.

648612999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72068111117 (or 72068111114 counting only the distinct ones).

The product of its digits is 1224440064, while the sum is 81.

The spelling of 648612999999 in words is "six hundred forty-eight billion, six hundred twelve million, nine hundred ninety-nine thousand, nine hundred ninety-nine".