648314208256 has 480 divisors, whose sum is σ = 1626618889728. Its totient is φ = 254159093760.

The previous prime is 648314208251. The next prime is 648314208271. The reversal of 648314208256 is 652802413846.

It is a super-2 number, since 2×648314208256² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648314208251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2856009615 + ... + 2856009841.

Almost surely, 2^648314208256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648314208256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813309444864).

648314208256 is an abundant number, since it is smaller than the sum of its proper divisors (978304681472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648314208256 is a wasteful number, since it uses less digits than its factorization.

648314208256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 648314208256 in words is "six hundred forty-eight billion, three hundred fourteen million, two hundred eight thousand, two hundred fifty-six".