648634847943 has 16 divisors (see below), whose sum is σ = 885734416512. Its totient is φ = 422087484000.

The previous prime is 648634847899. The next prime is 648634847951. The reversal of 648634847943 is 349748436846.

It is not a de Polignac number, because 648634847943 - 2¹⁰ = 648634846919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648634847843) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13504473 + ... + 13552418.

It is an arithmetic number, because the mean of its divisors is an integer number (55358401032).

Almost surely, 2^648634847943 is an apocalyptic number.

648634847943 is a deficient number, since it is larger than the sum of its proper divisors (237099568569).

648634847943 is a wasteful number, since it uses less digits than its factorization.

648634847943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27057086.

The product of its digits is 334430208, while the sum is 66.

The spelling of 648634847943 in words is "six hundred forty-eight billion, six hundred thirty-four million, eight hundred forty-seven thousand, nine hundred forty-three".