6541134140 has 24 divisors (see below), whose sum is σ = 13749018192. Its totient is φ = 2614046720.

The previous prime is 6541134109. The next prime is 6541134143. The reversal of 6541134140 is 414311456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6541134143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128069 + ... + 171708.

It is an arithmetic number, because the mean of its divisors is an integer number (572875758).

Almost surely, 2^6541134140 is an apocalyptic number.

It is an amenable number.

6541134140 is an abundant number, since it is smaller than the sum of its proper divisors (7207884052).

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

6541134140 is a wasteful number, since it uses less digits than its factorization.

6541134140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300877 (or 300875 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 6541134140 is about 80877.2782677558. The cubic root of 6541134140 is about 1870.1840630207.

Adding to 6541134140 its reverse (414311456), we get a palindrome (6955445596).

The spelling of 6541134140 in words is "six billion, five hundred forty-one million, one hundred thirty-four thousand, one hundred forty".