6541218140000 has 120 divisors (see below), whose sum is σ = 16132932346608. Its totient is φ = 2609893440000.

The previous prime is 6541218139997. The next prime is 6541218140099. The reversal of 6541218140000 is 418121456.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7528085 + ... + 8351915.

Almost surely, 2^{6541218140000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6541218140000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8066466173304).

6541218140000 is an abundant number, since it is smaller than the sum of its proper divisors (9591714206608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6541218140000 is an equidigital number, since it uses as much as digits as its factorization.

6541218140000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824258 (or 824235 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The spelling of 6541218140000 in words is "six trillion, five hundred forty-one billion, two hundred eighteen million, one hundred forty thousand".