648740565047846 has 4 divisors (see below), whose sum is σ = 973110847571772. Its totient is φ = 324370282523922.

The previous prime is 648740565047803. The next prime is 648740565047909.

648740565047846 is nontrivially palindromic in base 10.

648740565047846 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×648740565047846³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162185141261960 + ... + 162185141261963.

It is an arithmetic number, because the mean of its divisors is an integer number (243277711892943).

Almost surely, 2^{648740565047846} is an apocalyptic number.

648740565047846 is a deficient number, since it is larger than the sum of its proper divisors (324370282523926).

648740565047846 is a wasteful number, since it uses less digits than its factorization.

648740565047846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324370282523925.

The product of its (nonzero) digits is 4335206400, while the sum is 74.

The spelling of 648740565047846 in words is "six hundred forty-eight trillion, seven hundred forty billion, five hundred sixty-five million, forty-seven thousand, eight hundred forty-six".