650626166651 has 2 divisors, whose sum is σ = 650626166652. Its totient is φ = 650626166650.

The previous prime is 650626166639. The next prime is 650626166681. The reversal of 650626166651 is 156661626056.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 650626166651 - 2¹⁰ = 650626165627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 650626166651.

It is not a weakly prime, because it can be changed into another prime (650626166611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325313083325 + 325313083326.

It is an arithmetic number, because the mean of its divisors is an integer number (325313083326).

Almost surely, 2^650626166651 is an apocalyptic number.

650626166651 is a deficient number, since it is larger than the sum of its proper divisors (1).

650626166651 is an equidigital number, since it uses as much as digits as its factorization.

650626166651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 650626166651 in words is "six hundred fifty billion, six hundred twenty-six million, one hundred sixty-six thousand, six hundred fifty-one".