97874170649 has 2 divisors, whose sum is σ = 97874170650. Its totient is φ = 97874170648.

The previous prime is 97874170637. The next prime is 97874170657. The reversal of 97874170649 is 94607147879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72599530249 + 25274640400 = 269443^2 + 158980^2 .

It is a cyclic number.

It is not a de Polignac number, because 97874170649 - 2¹² = 97874166553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97874170591 and 97874170600.

It is not a weakly prime, because it can be changed into another prime (97874170609) 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, 48937085324 + 48937085325.

It is an arithmetic number, because the mean of its divisors is an integer number (48937085325).

Almost surely, 2^97874170649 is an apocalyptic number.

It is an amenable number.

97874170649 is a deficient number, since it is larger than the sum of its proper divisors (1).

97874170649 is an equidigital number, since it uses as much as digits as its factorization.

97874170649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21337344, while the sum is 62.

The spelling of 97874170649 in words is "ninety-seven billion, eight hundred seventy-four million, one hundred seventy thousand, six hundred forty-nine".