819652606061 has 2 divisors, whose sum is σ = 819652606062. Its totient is φ = 819652606060.

The previous prime is 819652606039. The next prime is 819652606063. The reversal of 819652606061 is 160606256918.

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., 668459948836 + 151192657225 = 817594^2 + 388835^2 .

It is a cyclic number.

It is not a de Polignac number, because 819652606061 - 2³⁰ = 818578864237 is a prime.

Together with 819652606063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (819652606063) 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 as a sum of consecutive naturals, namely, 409826303030 + 409826303031.

It is an arithmetic number, because the mean of its divisors is an integer number (409826303031).

Almost surely, 2^819652606061 is an apocalyptic number.

It is an amenable number.

819652606061 is a deficient number, since it is larger than the sum of its proper divisors (1).

819652606061 is an equidigital number, since it uses as much as digits as its factorization.

819652606061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 819652606061 in words is "eight hundred nineteen billion, six hundred fifty-two million, six hundred six thousand, sixty-one".