649432651136 has 32 divisors (see below), whose sum is σ = 1294132782600. Its totient is φ = 324630697984.

The previous prime is 649432651097. The next prime is 649432651177. The reversal of 649432651136 is 631156234946.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

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, 180281 + ... + 1153848.

Almost surely, 2^649432651136 is an apocalyptic number.

It is an amenable number.

649432651136 is a deficient number, since it is larger than the sum of its proper divisors (644700131464).

649432651136 is a wasteful number, since it uses less digits than its factorization.

649432651136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337946 (or 1337934 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 50.

The spelling of 649432651136 in words is "six hundred forty-nine billion, four hundred thirty-two million, six hundred fifty-one thousand, one hundred thirty-six".