97195761457 has 2 divisors, whose sum is σ = 97195761458. Its totient is φ = 97195761456.

The previous prime is 97195761437. The next prime is 97195761497. The reversal of 97195761457 is 75416759179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97017298576 + 178462881 = 311476^2 + 13359^2 .

It is an emirp because it is prime and its reverse (75416759179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97195761457 - 2⁷ = 97195761329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97195761395 and 97195761404.

It is not a weakly prime, because it can be changed into another prime (97195761437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48597880728 + 48597880729.

It is an arithmetic number, because the mean of its divisors is an integer number (48597880729).

Almost surely, 2^97195761457 is an apocalyptic number.

It is an amenable number.

97195761457 is a deficient number, since it is larger than the sum of its proper divisors (1).

97195761457 is an equidigital number, since it uses as much as digits as its factorization.

97195761457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16669800, while the sum is 61.

The spelling of 97195761457 in words is "ninety-seven billion, one hundred ninety-five million, seven hundred sixty-one thousand, four hundred fifty-seven".