6541394017 has 2 divisors, whose sum is σ = 6541394018. Its totient is φ = 6541394016.

The previous prime is 6541394009. The next prime is 6541394023. The reversal of 6541394017 is 7104931456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6198255441 + 343138576 = 78729^2 + 18524^2 .

It is a cyclic number.

It is not a de Polignac number, because 6541394017 - 2³ = 6541394009 is a prime.

It is not a weakly prime, because it can be changed into another prime (6541394087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3270697008 + 3270697009.

It is an arithmetic number, because the mean of its divisors is an integer number (3270697009).

Almost surely, 2^6541394017 is an apocalyptic number.

It is an amenable number.

6541394017 is a deficient number, since it is larger than the sum of its proper divisors (1).

6541394017 is an equidigital number, since it uses as much as digits as its factorization.

6541394017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 6541394017 is about 80878.8848649634. The cubic root of 6541394017 is about 1870.2088299483.

The spelling of 6541394017 in words is "six billion, five hundred forty-one million, three hundred ninety-four thousand, seventeen".