648287957843 has 16 divisors (see below), whose sum is σ = 674007665760. Its totient is φ = 622800192000.

The previous prime is 648287957831. The next prime is 648287957857. The reversal of 648287957843 is 348759782846.

It is a cyclic number.

It is not a de Polignac number, because 648287957843 - 2¹⁰ = 648287956819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648287957743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4730993 + ... + 4866093.

It is an arithmetic number, because the mean of its divisors is an integer number (42125479110).

Almost surely, 2^648287957843 is an apocalyptic number.

648287957843 is a deficient number, since it is larger than the sum of its proper divisors (25719707917).

648287957843 is a wasteful number, since it uses less digits than its factorization.

648287957843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135958.

The product of its digits is 650280960, while the sum is 71.

The spelling of 648287957843 in words is "six hundred forty-eight billion, two hundred eighty-seven million, nine hundred fifty-seven thousand, eight hundred forty-three".