648160916317 has 12 divisors (see below), whose sum is σ = 664579287988. Its totient is φ = 632138918400.

The previous prime is 648160916281. The next prime is 648160916321. The reversal of 648160916317 is 713619061846.

It can be written as a sum of positive squares in 6 ways, for example, as 306565081 + 647854351236 = 17509^2 + 804894^2 .

It is a de Polignac number, because none of the positive numbers 2^k-648160916317 is a prime.

It is a super-2 number, since 2×648160916317² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648160911317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5041717 + ... + 5168677.

Almost surely, 2^648160916317 is an apocalyptic number.

It is an amenable number.

648160916317 is a deficient number, since it is larger than the sum of its proper divisors (16418371671).

648160916317 is a wasteful number, since it uses less digits than its factorization.

648160916317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130080 (or 130039 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 648160916317 in words is "six hundred forty-eight billion, one hundred sixty million, nine hundred sixteen thousand, three hundred seventeen".