826080263557 has 2 divisors, whose sum is σ = 826080263558. Its totient is φ = 826080263556.

The previous prime is 826080263521. The next prime is 826080263621. The reversal of 826080263557 is 755362080628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 779099267556 + 46980996001 = 882666^2 + 216751^2 .

It is a cyclic number.

It is not a de Polignac number, because 826080263557 - 2³⁹ = 276324449669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (826080264557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413040131778 + 413040131779.

It is an arithmetic number, because the mean of its divisors is an integer number (413040131779).

Almost surely, 2^826080263557 is an apocalyptic number.

It is an amenable number.

826080263557 is a deficient number, since it is larger than the sum of its proper divisors (1).

826080263557 is an equidigital number, since it uses as much as digits as its factorization.

826080263557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 826080263557 in words is "eight hundred twenty-six billion, eighty million, two hundred sixty-three thousand, five hundred fifty-seven".