6541439818006 has 8 divisors (see below), whose sum is σ = 9812236481784. Its totient is φ = 3270694324080.

The previous prime is 6541439817967. The next prime is 6541439818007. The reversal of 6541439818006 is 6008189341456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×6541439818006⁴ (a number of 52 digits) contains 4444 as substring.

It is a congruent 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, 12471255 + ... + 12985186.

It is an arithmetic number, because the mean of its divisors is an integer number (1226529560223).

Almost surely, 2^{6541439818006} is an apocalyptic number.

6541439818006 is a deficient number, since it is larger than the sum of its proper divisors (3270796663778).

6541439818006 is a wasteful number, since it uses less digits than its factorization.

6541439818006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25584926.

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 6541439818006 in words is "six trillion, five hundred forty-one billion, four hundred thirty-nine million, eight hundred eighteen thousand, six".