97605656628449 has 2 divisors, whose sum is σ = 97605656628450. Its totient is φ = 97605656628448.

The previous prime is 97605656628421. The next prime is 97605656628503. The reversal of 97605656628449 is 94482665650679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57589050675025 + 40016605953424 = 7588745^2 + 6325868^2 .

It is an emirp because it is prime and its reverse (94482665650679) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97605656628449 - 2¹⁶ = 97605656562913 is a prime.

It is a super-2 number, since 2×97605656628449² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97605656628449.

It is not a weakly prime, because it can be changed into another prime (97605656628349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48802828314224 + 48802828314225.

It is an arithmetic number, because the mean of its divisors is an integer number (48802828314225).

Almost surely, 2^{97605656628449} is an apocalyptic number.

It is an amenable number.

97605656628449 is a deficient number, since it is larger than the sum of its proper divisors (1).

97605656628449 is an equidigital number, since it uses as much as digits as its factorization.

97605656628449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4702924800, while the sum is 77.

The spelling of 97605656628449 in words is "ninety-seven trillion, six hundred five billion, six hundred fifty-six million, six hundred twenty-eight thousand, four hundred forty-nine".