648664122239 has 12 divisors (see below), whose sum is σ = 759565619568. Its totient is φ = 552315708000.

The previous prime is 648664122181. The next prime is 648664122257. The reversal of 648664122239 is 932221466846.

It is not a de Polignac number, because 648664122239 - 2⁸ = 648664121983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648664122299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43827182 + ... + 43841979.

It is an arithmetic number, because the mean of its divisors is an integer number (63297134964).

Almost surely, 2^648664122239 is an apocalyptic number.

648664122239 is a deficient number, since it is larger than the sum of its proper divisors (110901497329).

648664122239 is a wasteful number, since it uses less digits than its factorization.

648664122239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87669326 (or 87669319 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 53.

The spelling of 648664122239 in words is "six hundred forty-eight billion, six hundred sixty-four million, one hundred twenty-two thousand, two hundred thirty-nine".