7704165490897 has 2 divisors, whose sum is σ = 7704165490898. Its totient is φ = 7704165490896.

The previous prime is 7704165490849. The next prime is 7704165490951. The reversal of 7704165490897 is 7980945614077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4119016375296 + 3585149115601 = 2029536^2 + 1893449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7704165490897 is a prime.

It is a super-2 number, since 2×7704165490897² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7704165490297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3852082745448 + 3852082745449.

It is an arithmetic number, because the mean of its divisors is an integer number (3852082745449).

Almost surely, 2^{7704165490897} is an apocalyptic number.

It is an amenable number.

7704165490897 is a deficient number, since it is larger than the sum of its proper divisors (1).

7704165490897 is an equidigital number, since it uses as much as digits as its factorization.

7704165490897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 106686720, while the sum is 67.

The spelling of 7704165490897 in words is "seven trillion, seven hundred four billion, one hundred sixty-five million, four hundred ninety thousand, eight hundred ninety-seven".