648555844476 has 24 divisors (see below), whose sum is σ = 1526688982224. Its totient is φ = 214272136960.

The previous prime is 648555844427. The next prime is 648555844483. The reversal of 648555844476 is 674448555846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239141655 + ... + 239144366.

It is an arithmetic number, because the mean of its divisors is an integer number (63612040926).

Almost surely, 2^648555844476 is an apocalyptic number.

It is an amenable number.

648555844476 is an abundant number, since it is smaller than the sum of its proper divisors (878133137748).

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

648555844476 is a wasteful number, since it uses less digits than its factorization.

648555844476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478286141 (or 478286139 counting only the distinct ones).

The product of its digits is 516096000, while the sum is 66.

The spelling of 648555844476 in words is "six hundred forty-eight billion, five hundred fifty-five million, eight hundred forty-four thousand, four hundred seventy-six".