806424228557 has 2 divisors, whose sum is σ = 806424228558. Its totient is φ = 806424228556.

The previous prime is 806424228553. The next prime is 806424228611. The reversal of 806424228557 is 755822424608.

806424228557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 755067150916 + 51357077641 = 868946^2 + 226621^2 .

It is a cyclic number.

It is not a de Polignac number, because 806424228557 - 2² = 806424228553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 806424228499 and 806424228508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806424228553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403212114278 + 403212114279.

It is an arithmetic number, because the mean of its divisors is an integer number (403212114279).

Almost surely, 2^806424228557 is an apocalyptic number.

It is an amenable number.

806424228557 is a deficient number, since it is larger than the sum of its proper divisors (1).

806424228557 is an equidigital number, since it uses as much as digits as its factorization.

806424228557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8601600, while the sum is 53.

The spelling of 806424228557 in words is "eight hundred six billion, four hundred twenty-four million, two hundred twenty-eight thousand, five hundred fifty-seven".