655267844897 has 2 divisors, whose sum is σ = 655267844898. Its totient is φ = 655267844896.

The previous prime is 655267844893. The next prime is 655267844921. The reversal of 655267844897 is 798448762556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 333715337761 + 321552507136 = 577681^2 + 567056^2 .

It is a cyclic number.

It is not a de Polignac number, because 655267844897 - 2² = 655267844893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655267844897.

It is not a weakly prime, because it can be changed into another prime (655267844893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327633922448 + 327633922449.

It is an arithmetic number, because the mean of its divisors is an integer number (327633922449).

Almost surely, 2^655267844897 is an apocalyptic number.

It is an amenable number.

655267844897 is a deficient number, since it is larger than the sum of its proper divisors (1).

655267844897 is an equidigital number, since it uses as much as digits as its factorization.

655267844897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 812851200, while the sum is 71.

The spelling of 655267844897 in words is "six hundred fifty-five billion, two hundred sixty-seven million, eight hundred forty-four thousand, eight hundred ninety-seven".