648922049713 has 12 divisors (see below), whose sum is σ = 755091440820. Its totient is φ = 556054632672.

The previous prime is 648922049707. The next prime is 648922049771. The reversal of 648922049713 is 317940229846.

It can be written as a sum of positive squares in 2 ways, for example, as 403240240144 + 245681809569 = 635012^2 + 495663^2 .

It is not a de Polignac number, because 648922049713 - 2¹⁷ = 648921918641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648925049713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1787806 + ... + 2119927.

It is an arithmetic number, because the mean of its divisors is an integer number (62924286735).

Almost surely, 2^648922049713 is an apocalyptic number.

It is an amenable number.

648922049713 is a deficient number, since it is larger than the sum of its proper divisors (106169391107).

648922049713 is a wasteful number, since it uses less digits than its factorization.

648922049713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911136 (or 3911129 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 648922049713 in words is "six hundred forty-eight billion, nine hundred twenty-two million, forty-nine thousand, seven hundred thirteen".