97798641253 has 2 divisors, whose sum is σ = 97798641254. Its totient is φ = 97798641252.

The previous prime is 97798641209. The next prime is 97798641319. The reversal of 97798641253 is 35214689779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71341341604 + 26457299649 = 267098^2 + 162657^2 .

It is a cyclic number.

It is not a de Polignac number, because 97798641253 - 2¹³ = 97798633061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97798641191 and 97798641200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97798641653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48899320626 + 48899320627.

It is an arithmetic number, because the mean of its divisors is an integer number (48899320627).

Almost surely, 2^97798641253 is an apocalyptic number.

It is an amenable number.

97798641253 is a deficient number, since it is larger than the sum of its proper divisors (1).

97798641253 is an equidigital number, since it uses as much as digits as its factorization.

97798641253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 61.

The spelling of 97798641253 in words is "ninety-seven billion, seven hundred ninety-eight million, six hundred forty-one thousand, two hundred fifty-three".