197553166873 has 2 divisors, whose sum is σ = 197553166874. Its totient is φ = 197553166872.

The previous prime is 197553166841. The next prime is 197553166913. The reversal of 197553166873 is 378661355791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153716532489 + 43836634384 = 392067^2 + 209372^2 .

It is a cyclic number.

It is not a de Polignac number, because 197553166873 - 2⁵ = 197553166841 is a prime.

It is not a weakly prime, because it can be changed into another prime (197553166673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98776583436 + 98776583437.

It is an arithmetic number, because the mean of its divisors is an integer number (98776583437).

Almost surely, 2^197553166873 is an apocalyptic number.

It is an amenable number.

197553166873 is a deficient number, since it is larger than the sum of its proper divisors (1).

197553166873 is an equidigital number, since it uses as much as digits as its factorization.

197553166873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28576800, while the sum is 61.

The spelling of 197553166873 in words is "one hundred ninety-seven billion, five hundred fifty-three million, one hundred sixty-six thousand, eight hundred seventy-three".