97915687433 has 2 divisors, whose sum is σ = 97915687434. Its totient is φ = 97915687432.

The previous prime is 97915687421. The next prime is 97915687537. The reversal of 97915687433 is 33478651979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88686626809 + 9229060624 = 297803^2 + 96068^2 .

It is an emirp because it is prime and its reverse (33478651979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97915687433 - 2⁴ = 97915687417 is a prime.

It is not a weakly prime, because it can be changed into another prime (97915687403) 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, 48957843716 + 48957843717.

It is an arithmetic number, because the mean of its divisors is an integer number (48957843717).

Almost surely, 2^97915687433 is an apocalyptic number.

It is an amenable number.

97915687433 is a deficient number, since it is larger than the sum of its proper divisors (1).

97915687433 is an equidigital number, since it uses as much as digits as its factorization.

97915687433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34292160, while the sum is 62.

The spelling of 97915687433 in words is "ninety-seven billion, nine hundred fifteen million, six hundred eighty-seven thousand, four hundred thirty-three".