827342222239657 has 2 divisors, whose sum is σ = 827342222239658. Its totient is φ = 827342222239656.

The previous prime is 827342222239591. The next prime is 827342222239667. The reversal of 827342222239657 is 756932222243728.

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., 565758049777561 + 261584172462096 = 23785669^2 + 16173564^2 .

It is a cyclic number.

It is not a de Polignac number, because 827342222239657 - 2²⁷ = 827342088021929 is a prime.

It is not a weakly prime, because it can be changed into another prime (827342222239667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413671111119828 + 413671111119829.

It is an arithmetic number, because the mean of its divisors is an integer number (413671111119829).

Almost surely, 2^{827342222239657} is an apocalyptic number.

It is an amenable number.

827342222239657 is a deficient number, since it is larger than the sum of its proper divisors (1).

827342222239657 is an equidigital number, since it uses as much as digits as its factorization.

827342222239657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243855360, while the sum is 64.

The spelling of 827342222239657 in words is "eight hundred twenty-seven trillion, three hundred forty-two billion, two hundred twenty-two million, two hundred thirty-nine thousand, six hundred fifty-seven".