6540024213 has 16 divisors (see below), whose sum is σ = 10001472000. Its totient is φ = 4219369920.

The previous prime is 6540024209. The next prime is 6540024223. The reversal of 6540024213 is 3124200456.

6540024213 is a `hidden beast` number, since 6 + 5 + 400 + 242 + 13 = 666.

It is not a de Polignac number, because 6540024213 - 2² = 6540024209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540024223) 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, 3905988 + ... + 3907661.

It is an arithmetic number, because the mean of its divisors is an integer number (625092000).

Almost surely, 2^6540024213 is an apocalyptic number.

It is an amenable number.

6540024213 is a deficient number, since it is larger than the sum of its proper divisors (3461447787).

6540024213 is a wasteful number, since it uses less digits than its factorization.

6540024213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7813689 (or 7813683 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 6540024213 is about 80870.4161792185. The cubic root of 6540024213 is about 1870.0782768190.

Adding to 6540024213 its reverse (3124200456), we get a palindrome (9664224669).

The spelling of 6540024213 in words is "six billion, five hundred forty million, twenty-four thousand, two hundred thirteen".