6541132631140 has 96 divisors (see below), whose sum is σ = 13922852106240. Its totient is φ = 2581078004736.

The previous prime is 6541132631129. The next prime is 6541132631141. The reversal of 6541132631140 is 411362311456.

It is a self number, because there is not a number n which added to its sum of digits gives 6541132631140.

It is not an unprimeable number, because it can be changed into a prime (6541132631141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2065401837 + ... + 2065405003.

It is an arithmetic number, because the mean of its divisors is an integer number (145029709440).

Almost surely, 2^{6541132631140} is an apocalyptic number.

It is an amenable number.

6541132631140 is an abundant number, since it is smaller than the sum of its proper divisors (7381719475100).

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

6541132631140 is a wasteful number, since it uses less digits than its factorization.

6541132631140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581 (or 5579 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 6541132631140 its reverse (411362311456), we get a palindrome (6952494942596).

The spelling of 6541132631140 in words is "six trillion, five hundred forty-one billion, one hundred thirty-two million, six hundred thirty-one thousand, one hundred forty".