648489909984846 has 32 divisors (see below), whose sum is σ = 1384843973610240. Its totient is φ = 201956412814464.

The previous prime is 648489909984793. The next prime is 648489909984937.

It is a happy number.

648489909984846 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54641880651 + ... + 54641892518.

It is an arithmetic number, because the mean of its divisors is an integer number (43276374175320).

Almost surely, 2^{648489909984846} is an apocalyptic number.

648489909984846 is an abundant number, since it is smaller than the sum of its proper divisors (736354063625394).

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

648489909984846 is a wasteful number, since it uses less digits than its factorization.

648489909984846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109283773240.

The product of its (nonzero) digits is 247669456896, while the sum is 96.

The spelling of 648489909984846 in words is "six hundred forty-eight trillion, four hundred eighty-nine billion, nine hundred nine million, nine hundred eighty-four thousand, eight hundred forty-six".