648458687256 has 32 divisors (see below), whose sum is σ = 1623459380400. Its totient is φ = 215844540800.

The previous prime is 648458687243. The next prime is 648458687257. The reversal of 648458687256 is 652786854846.

648458687256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648458687257) 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, 19255011 + ... + 19288658.

Almost surely, 2^648458687256 is an apocalyptic number.

It is an amenable number.

648458687256 is an abundant number, since it is smaller than the sum of its proper divisors (975000693144).

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

648458687256 is a wasteful number, since it uses less digits than its factorization.

648458687256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38544379 (or 38544375 counting only the distinct ones).

The product of its digits is 619315200, while the sum is 69.

The spelling of 648458687256 in words is "six hundred forty-eight billion, four hundred fifty-eight million, six hundred eighty-seven thousand, two hundred fifty-six".