649228844049 has 16 divisors (see below), whose sum is σ = 878591596608. Its totient is φ = 426343148352.

The previous prime is 649228844041. The next prime is 649228844093. The reversal of 649228844049 is 940448822946.

It is not a de Polignac number, because 649228844049 - 2³ = 649228844041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 649228843983 and 649228844001.

It is not an unprimeable number, because it can be changed into a prime (649228844041) 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, 7780819 + ... + 7863815.

It is an arithmetic number, because the mean of its divisors is an integer number (54911974788).

Almost surely, 2^649228844049 is an apocalyptic number.

It is an amenable number.

649228844049 is a deficient number, since it is larger than the sum of its proper divisors (229362752559).

649228844049 is a wasteful number, since it uses less digits than its factorization.

649228844049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121984.

The product of its (nonzero) digits is 31850496, while the sum is 60.

The spelling of 649228844049 in words is "six hundred forty-nine billion, two hundred twenty-eight million, eight hundred forty-four thousand, forty-nine".