6541439818007 has 2 divisors, whose sum is σ = 6541439818008. Its totient is φ = 6541439818006.

The previous prime is 6541439817967. The next prime is 6541439818013. The reversal of 6541439818007 is 7008189341456.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6541439818007 - 2¹² = 6541439813911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6541439818087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3270719909003 + 3270719909004.

It is an arithmetic number, because the mean of its divisors is an integer number (3270719909004).

Almost surely, 2^{6541439818007} is an apocalyptic number.

6541439818007 is a deficient number, since it is larger than the sum of its proper divisors (1).

6541439818007 is an equidigital number, since it uses as much as digits as its factorization.

6541439818007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 6541439818007 in words is "six trillion, five hundred forty-one billion, four hundred thirty-nine million, eight hundred eighteen thousand, seven".