806627065549 has 2 divisors, whose sum is σ = 806627065550. Its totient is φ = 806627065548.

The previous prime is 806627065523. The next prime is 806627065697. The reversal of 806627065549 is 945560726608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664807037449 + 141820028100 = 815357^2 + 376590^2 .

It is a cyclic number.

It is not a de Polignac number, because 806627065549 - 2²⁵ = 806593511117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 806627065493 and 806627065502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806627066549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403313532774 + 403313532775.

It is an arithmetic number, because the mean of its divisors is an integer number (403313532775).

Almost surely, 2^806627065549 is an apocalyptic number.

It is an amenable number.

806627065549 is a deficient number, since it is larger than the sum of its proper divisors (1).

806627065549 is an equidigital number, since it uses as much as digits as its factorization.

806627065549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 806627065549 in words is "eight hundred six billion, six hundred twenty-seven million, sixty-five thousand, five hundred forty-nine".