649822069664 has 24 divisors (see below), whose sum is σ = 1285766042400. Its totient is φ = 323278312896.

The previous prime is 649822069627. The next prime is 649822069681. The reversal of 649822069664 is 466960228946.

It is a junction number, because it is equal to n+sod(n) for n = 649822069597 and 649822069606.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 51016094 + ... + 51028829.

It is an arithmetic number, because the mean of its divisors is an integer number (53573585100).

Almost surely, 2^649822069664 is an apocalyptic number.

It is an amenable number.

649822069664 is a deficient number, since it is larger than the sum of its proper divisors (635943972736).

649822069664 is a wasteful number, since it uses less digits than its factorization.

649822069664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102045132 (or 102045124 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 62.

The spelling of 649822069664 in words is "six hundred forty-nine billion, eight hundred twenty-two million, sixty-nine thousand, six hundred sixty-four".