826455545257 has 2 divisors, whose sum is σ = 826455545258. Its totient is φ = 826455545256.

The previous prime is 826455545203. The next prime is 826455545299. The reversal of 826455545257 is 752545554628.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496363929961 + 330091615296 = 704531^2 + 574536^2 .

It is a cyclic number.

It is not a de Polignac number, because 826455545257 - 2¹⁵ = 826455512489 is a prime.

It is not a weakly prime, because it can be changed into another prime (826455545557) 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, 413227772628 + 413227772629.

It is an arithmetic number, because the mean of its divisors is an integer number (413227772629).

Almost surely, 2^826455545257 is an apocalyptic number.

It is an amenable number.

826455545257 is a deficient number, since it is larger than the sum of its proper divisors (1).

826455545257 is an equidigital number, since it uses as much as digits as its factorization.

826455545257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200000, while the sum is 58.

The spelling of 826455545257 in words is "eight hundred twenty-six billion, four hundred fifty-five million, five hundred forty-five thousand, two hundred fifty-seven".