649584843523208 has 16 divisors (see below), whose sum is σ = 1289616968759580. Its totient is φ = 305686985187328.

The previous prime is 649584843523199. The next prime is 649584843523223. The reversal of 649584843523208 is 802325348485946.

It can be written as a sum of positive squares in 2 ways, for example, as 500218363575844 + 149366479947364 = 22365562^2 + 12221558^2 .

It is a super-2 number, since 2×649584843523208² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2388179571641 + ... + 2388179571912.

Almost surely, 2^{649584843523208} is an apocalyptic number.

649584843523208 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

649584843523208 is a deficient number, since it is larger than the sum of its proper divisors (640032125236372).

649584843523208 is a wasteful number, since it uses less digits than its factorization.

649584843523208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4776359143576 (or 4776359143572 counting only the distinct ones).

The product of its (nonzero) digits is 1592524800, while the sum is 71.

The spelling of 649584843523208 in words is "six hundred forty-nine trillion, five hundred eighty-four billion, eight hundred forty-three million, five hundred twenty-three thousand, two hundred eight".