6541439813911 has 2 divisors, whose sum is σ = 6541439813912. Its totient is φ = 6541439813910.

The previous prime is 6541439813903. The next prime is 6541439813917. The reversal of 6541439813911 is 1193189341456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6541439813911 - 2³ = 6541439813903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6541439813917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3270719906955 + 3270719906956.

It is an arithmetic number, because the mean of its divisors is an integer number (3270719906956).

Almost surely, 2^{6541439813911} is an apocalyptic number.

6541439813911 is a deficient number, since it is larger than the sum of its proper divisors (1).

6541439813911 is an equidigital number, since it uses as much as digits as its factorization.

6541439813911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 55.

The spelling of 6541439813911 in words is "six trillion, five hundred forty-one billion, four hundred thirty-nine million, eight hundred thirteen thousand, nine hundred eleven".