6540128833 has 16 divisors (see below), whose sum is σ = 8028400000. Its totient is φ = 5310776016.

The previous prime is 6540128827. The next prime is 6540128863. The reversal of 6540128833 is 3388210456.

It is a de Polignac number, because none of the positive numbers 2^k-6540128833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6540128863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495258 + ... + 508291.

It is an arithmetic number, because the mean of its divisors is an integer number (501775000).

Almost surely, 2^6540128833 is an apocalyptic number.

It is an amenable number.

6540128833 is a deficient number, since it is larger than the sum of its proper divisors (1488271167).

6540128833 is a wasteful number, since it uses less digits than its factorization.

6540128833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003589 (or 1003575 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 6540128833 is about 80871.0630139112. The cubic root of 6540128833 is about 1870.0882485735.

The spelling of 6540128833 in words is "six billion, five hundred forty million, one hundred twenty-eight thousand, eight hundred thirty-three".