651260221133 has 2 divisors, whose sum is σ = 651260221134. Its totient is φ = 651260221132.

The previous prime is 651260221121. The next prime is 651260221151. The reversal of 651260221133 is 331122062156.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 461445772804 + 189814448329 = 679298^2 + 435677^2 .

It is a cyclic number.

It is not a de Polignac number, because 651260221133 - 2¹⁰ = 651260220109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 651260221133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651260221033) by changing a digit.

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 as a sum of consecutive naturals, namely, 325630110566 + 325630110567.

It is an arithmetic number, because the mean of its divisors is an integer number (325630110567).

Almost surely, 2^651260221133 is an apocalyptic number.

It is an amenable number.

651260221133 is a deficient number, since it is larger than the sum of its proper divisors (1).

651260221133 is an equidigital number, since it uses as much as digits as its factorization.

651260221133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 651260221133 its reverse (331122062156), we get a palindrome (982382283289).

The spelling of 651260221133 in words is "six hundred fifty-one billion, two hundred sixty million, two hundred twenty-one thousand, one hundred thirty-three".