606525791561 has 2 divisors, whose sum is σ = 606525791562. Its totient is φ = 606525791560.

The previous prime is 606525791533. The next prime is 606525791567. The reversal of 606525791561 is 165197525606.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 345015264400 + 261510527161 = 587380^2 + 511381^2 .

It is a cyclic number.

It is not a de Polignac number, because 606525791561 - 2²² = 606521597257 is a prime.

It is not a weakly prime, because it can be changed into another prime (606525791567) 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, 303262895780 + 303262895781.

It is an arithmetic number, because the mean of its divisors is an integer number (303262895781).

Almost surely, 2^606525791561 is an apocalyptic number.

It is an amenable number.

606525791561 is a deficient number, since it is larger than the sum of its proper divisors (1).

606525791561 is an equidigital number, since it uses as much as digits as its factorization.

606525791561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402000, while the sum is 53.

The spelling of 606525791561 in words is "six hundred six billion, five hundred twenty-five million, seven hundred ninety-one thousand, five hundred sixty-one".