648989595636 has 48 divisors (see below), whose sum is σ = 1530064388160. Its totient is φ = 214079523840.

The previous prime is 648989595629. The next prime is 648989595647. The reversal of 648989595636 is 636595989846.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17232835 + ... + 17270453.

It is an arithmetic number, because the mean of its divisors is an integer number (31876341420).

Almost surely, 2^648989595636 is an apocalyptic number.

It is an amenable number.

648989595636 is an abundant number, since it is smaller than the sum of its proper divisors (881074792524).

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

648989595636 is a wasteful number, since it uses less digits than its factorization.

648989595636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52544 (or 52542 counting only the distinct ones).

The product of its digits is 3023308800, while the sum is 78.

The spelling of 648989595636 in words is "six hundred forty-eight billion, nine hundred eighty-nine million, five hundred ninety-five thousand, six hundred thirty-six".