6541065432 has 144 divisors (see below), whose sum is σ = 19606860000. Its totient is φ = 1968447360.

The previous prime is 6541065403. The next prime is 6541065467. The reversal of 6541065432 is 2345601456.

6541065432 is a `hidden beast` number, since 6 + 5 + 4 + 106 + 543 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1295569 + ... + 1300607.

It is an arithmetic number, because the mean of its divisors is an integer number (136158750).

Almost surely, 2^6541065432 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 6541065432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9803430000).

6541065432 is an abundant number, since it is smaller than the sum of its proper divisors (13065794568).

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

6541065432 is a wasteful number, since it uses less digits than its factorization.

6541065432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5222 (or 5204 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 6541065432 is about 80876.8534996262. The cubic root of 6541065432 is about 1870.1775148670.

Adding to 6541065432 its reverse (2345601456), we get a palindrome (8886666888).

The spelling of 6541065432 in words is "six billion, five hundred forty-one million, sixty-five thousand, four hundred thirty-two".