6541471687 has 2 divisors, whose sum is σ = 6541471688. Its totient is φ = 6541471686.

The previous prime is 6541471619. The next prime is 6541471733. The reversal of 6541471687 is 7861741456.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6541471687 - 2¹⁵ = 6541438919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6541471687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6541471987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3270735843 + 3270735844.

It is an arithmetic number, because the mean of its divisors is an integer number (3270735844).

Almost surely, 2^6541471687 is an apocalyptic number.

6541471687 is a deficient number, since it is larger than the sum of its proper divisors (1).

6541471687 is an equidigital number, since it uses as much as digits as its factorization.

6541471687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 49.

The square root of 6541471687 is about 80879.3650259447. The cubic root of 6541471687 is about 1870.2162319661.

The spelling of 6541471687 in words is "six billion, five hundred forty-one million, four hundred seventy-one thousand, six hundred eighty-seven".