6541439818003 has 4 divisors (see below), whose sum is σ = 6542385529680. Its totient is φ = 6540494106328.

The previous prime is 6541439817967. The next prime is 6541439818007. The reversal of 6541439818003 is 3008189341456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6541439818003 - 2¹³ = 6541439809811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6541439818007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472845463 + ... + 472859296.

It is an arithmetic number, because the mean of its divisors is an integer number (1635596382420).

Almost surely, 2^{6541439818003} is an apocalyptic number.

6541439818003 is a deficient number, since it is larger than the sum of its proper divisors (945711677).

6541439818003 is an equidigital number, since it uses as much as digits as its factorization.

6541439818003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945711676.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 6541439818003 in words is "six trillion, five hundred forty-one billion, four hundred thirty-nine million, eight hundred eighteen thousand, three".