650266006721 has 16 divisors (see below), whose sum is σ = 685142841600. Its totient is φ = 616296676800.

The previous prime is 650266006699. The next prime is 650266006727. The reversal of 650266006721 is 127600662056.

It is a cyclic number.

It is not a de Polignac number, because 650266006721 - 2⁶ = 650266006657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650266006727) 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 15 ways as a sum of consecutive naturals, for example, 218045 + ... + 1161066.

It is an arithmetic number, because the mean of its divisors is an integer number (42821427600).

Almost surely, 2^650266006721 is an apocalyptic number.

It is an amenable number.

650266006721 is a deficient number, since it is larger than the sum of its proper divisors (34876834879).

650266006721 is a wasteful number, since it uses less digits than its factorization.

650266006721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379440.

The product of its (nonzero) digits is 181440, while the sum is 41.

Adding to 650266006721 its reverse (127600662056), we get a palindrome (777866668777).

The spelling of 650266006721 in words is "six hundred fifty billion, two hundred sixty-six million, six thousand, seven hundred twenty-one".