97128166853 has 2 divisors, whose sum is σ = 97128166854. Its totient is φ = 97128166852.

The previous prime is 97128166841. The next prime is 97128166873. The reversal of 97128166853 is 35866182179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96371751844 + 756415009 = 310438^2 + 27503^2 .

It is a cyclic number.

It is not a de Polignac number, because 97128166853 - 2⁶ = 97128166789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97128166873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48564083426 + 48564083427.

It is an arithmetic number, because the mean of its divisors is an integer number (48564083427).

Almost surely, 2^97128166853 is an apocalyptic number.

It is an amenable number.

97128166853 is a deficient number, since it is larger than the sum of its proper divisors (1).

97128166853 is an equidigital number, since it uses as much as digits as its factorization.

97128166853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 56.

The spelling of 97128166853 in words is "ninety-seven billion, one hundred twenty-eight million, one hundred sixty-six thousand, eight hundred fifty-three".