649980754712 has 16 divisors (see below), whose sum is σ = 1219835103360. Its totient is φ = 324691393824.

The previous prime is 649980754711. The next prime is 649980754729. The reversal of 649980754712 is 217457089946.

It is a super-2 number, since 2×649980754712² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649980754711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37363703 + ... + 37381094.

It is an arithmetic number, because the mean of its divisors is an integer number (76239693960).

Almost surely, 2^649980754712 is an apocalyptic number.

It is an amenable number.

649980754712 is a deficient number, since it is larger than the sum of its proper divisors (569854348648).

649980754712 is a wasteful number, since it uses less digits than its factorization.

649980754712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74745890 (or 74745886 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 649980754712 in words is "six hundred forty-nine billion, nine hundred eighty million, seven hundred fifty-four thousand, seven hundred twelve".