6540442224 has 20 divisors (see below), whose sum is σ = 16896142536. Its totient is φ = 2180147392.

The previous prime is 6540442211. The next prime is 6540442229. The reversal of 6540442224 is 4222440456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540442229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68129559 + ... + 68129654.

Almost surely, 2^6540442224 is an apocalyptic number.

It is an amenable number.

6540442224 is an abundant number, since it is smaller than the sum of its proper divisors (10355700312).

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

6540442224 is a wasteful number, since it uses less digits than its factorization.

6540442224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136259224 (or 136259218 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 33.

The square root of 6540442224 is about 80873.0005873406. Note that the first 3 decimals coincide. The cubic root of 6540442224 is about 1870.1181184981.

The spelling of 6540442224 in words is "six billion, five hundred forty million, four hundred forty-two thousand, two hundred twenty-four".