7178841400897 has 2 divisors, whose sum is σ = 7178841400898. Its totient is φ = 7178841400896.

The previous prime is 7178841400867. The next prime is 7178841400901. The reversal of 7178841400897 is 7980041488717.

It is a Cunningham number, because it is equal to 2679336²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7178841400896 + 1 = 2679336^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7178841400897 is a prime.

It is not a weakly prime, because it can be changed into another prime (7178841400867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3589420700448 + 3589420700449.

It is an arithmetic number, because the mean of its divisors is an integer number (3589420700449).

Almost surely, 2^{7178841400897} is an apocalyptic number.

It is an amenable number.

7178841400897 is a deficient number, since it is larger than the sum of its proper divisors (1).

7178841400897 is an equidigital number, since it uses as much as digits as its factorization.

7178841400897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25288704, while the sum is 64.

The spelling of 7178841400897 in words is "seven trillion, one hundred seventy-eight billion, eight hundred forty-one million, four hundred thousand, eight hundred ninety-seven".