671548414417 has 2 divisors, whose sum is σ = 671548414418. Its totient is φ = 671548414416.

The previous prime is 671548414409. The next prime is 671548414463. The reversal of 671548414417 is 714414845176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 512382524481 + 159165889936 = 715809^2 + 398956^2 .

It is a cyclic number.

It is not a de Polignac number, because 671548414417 - 2³ = 671548414409 is a prime.

It is not a weakly prime, because it can be changed into another prime (671548414517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335774207208 + 335774207209.

It is an arithmetic number, because the mean of its divisors is an integer number (335774207209).

Almost surely, 2^671548414417 is an apocalyptic number.

It is an amenable number.

671548414417 is a deficient number, since it is larger than the sum of its proper divisors (1).

671548414417 is an equidigital number, since it uses as much as digits as its factorization.

671548414417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3010560, while the sum is 52.

The spelling of 671548414417 in words is "six hundred seventy-one billion, five hundred forty-eight million, four hundred fourteen thousand, four hundred seventeen".