1641340805471 has 2 divisors, whose sum is σ = 1641340805472. Its totient is φ = 1641340805470.

The previous prime is 1641340805453. The next prime is 1641340805497. The reversal of 1641340805471 is 1745080431461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1641340805471 - 2¹⁰ = 1641340804447 is a prime.

It is a super-3 number, since 3×1641340805471³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1641340802471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820670402735 + 820670402736.

It is an arithmetic number, because the mean of its divisors is an integer number (820670402736).

Almost surely, 2^{1641340805471} is an apocalyptic number.

1641340805471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641340805471 is an equidigital number, since it uses as much as digits as its factorization.

1641340805471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 1641340805471 in words is "one trillion, six hundred forty-one billion, three hundred forty million, eight hundred five thousand, four hundred seventy-one".