97155610177 has 2 divisors, whose sum is σ = 97155610178. Its totient is φ = 97155610176.

The previous prime is 97155610151. The next prime is 97155610217. The reversal of 97155610177 is 77101655179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92148066481 + 5007543696 = 303559^2 + 70764^2 .

It is a cyclic number.

It is not a de Polignac number, because 97155610177 - 2⁷ = 97155610049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97155610177.

It is not a weakly prime, because it can be changed into another prime (97155610577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48577805088 + 48577805089.

It is an arithmetic number, because the mean of its divisors is an integer number (48577805089).

Almost surely, 2^97155610177 is an apocalyptic number.

It is an amenable number.

97155610177 is a deficient number, since it is larger than the sum of its proper divisors (1).

97155610177 is an equidigital number, since it uses as much as digits as its factorization.

97155610177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 463050, while the sum is 49.

The spelling of 97155610177 in words is "ninety-seven billion, one hundred fifty-five million, six hundred ten thousand, one hundred seventy-seven".