649862786848 has 192 divisors, whose sum is σ = 1524033729792. Its totient is φ = 269718958080.

The previous prime is 649862786843. The next prime is 649862786851. The reversal of 649862786848 is 848687268946.

It is not an unprimeable number, because it can be changed into a prime (649862786843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15855790 + ... + 15896722.

It is an arithmetic number, because the mean of its divisors is an integer number (7937675676).

Almost surely, 2^649862786848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649862786848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762016864896).

649862786848 is an abundant number, since it is smaller than the sum of its proper divisors (874170942944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649862786848 is a wasteful number, since it uses less digits than its factorization.

649862786848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41067 (or 41059 counting only the distinct ones).

The product of its digits is 1783627776, while the sum is 76.

The spelling of 649862786848 in words is "six hundred forty-nine billion, eight hundred sixty-two million, seven hundred eighty-six thousand, eight hundred forty-eight".