6542415222 has 72 divisors (see below), whose sum is σ = 15370255656. Its totient is φ = 1851123456.

The previous prime is 6542415193. The next prime is 6542415227. The reversal of 6542415222 is 2225142456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542415227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3492078 + ... + 3493950.

It is an arithmetic number, because the mean of its divisors is an integer number (213475773).

Almost surely, 2^6542415222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6542415222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7685127828).

6542415222 is an abundant number, since it is smaller than the sum of its proper divisors (8827840434).

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

6542415222 is a wasteful number, since it uses less digits than its factorization.

6542415222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110 (or 1994 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

The square root of 6542415222 is about 80885.1977929213. The cubic root of 6542415222 is about 1870.3061469843.

Adding to 6542415222 its reverse (2225142456), we get a palindrome (8767557678).

The spelling of 6542415222 in words is "six billion, five hundred forty-two million, four hundred fifteen thousand, two hundred twenty-two".