665201111417 has 2 divisors, whose sum is σ = 665201111418. Its totient is φ = 665201111416.

The previous prime is 665201111401. The next prime is 665201111441. The reversal of 665201111417 is 714111102566.

665201111417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 505799750416 + 159401361001 = 711196^2 + 399251^2 .

It is a cyclic number.

It is not a de Polignac number, because 665201111417 - 2⁴ = 665201111401 is a prime.

It is not a weakly prime, because it can be changed into another prime (665201111917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332600555708 + 332600555709.

It is an arithmetic number, because the mean of its divisors is an integer number (332600555709).

Almost surely, 2^665201111417 is an apocalyptic number.

It is an amenable number.

665201111417 is a deficient number, since it is larger than the sum of its proper divisors (1).

665201111417 is an equidigital number, since it uses as much as digits as its factorization.

665201111417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 35.

The spelling of 665201111417 in words is "six hundred sixty-five billion, two hundred one million, one hundred eleven thousand, four hundred seventeen".