648369650932709 has 8 divisors (see below), whose sum is σ = 655060695652440. Its totient is φ = 641692109836800.

The previous prime is 648369650932693. The next prime is 648369650932733. The reversal of 648369650932709 is 907239056963846.

648369650932709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7571561212609 + 640798089720100 = 2751647^2 + 25313990^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 648369650932709 - 2⁴ = 648369650932693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 648369650932709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648369650935709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3375809432 + ... + 3376001489.

It is an arithmetic number, because the mean of its divisors is an integer number (81882586956555).

Almost surely, 2^{648369650932709} is an apocalyptic number.

It is an amenable number.

648369650932709 is a deficient number, since it is larger than the sum of its proper divisors (6691044719731).

648369650932709 is a wasteful number, since it uses less digits than its factorization.

648369650932709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6751811911.

The product of its (nonzero) digits is 3174474240, while the sum is 77.

The spelling of 648369650932709 in words is "six hundred forty-eight trillion, three hundred sixty-nine billion, six hundred fifty million, nine hundred thirty-two thousand, seven hundred nine".