2640137524 has 12 divisors (see below), whose sum is σ = 4821120864. Its totient is φ = 1262674424.

The previous prime is 2640137503. The next prime is 2640137527. The reversal of 2640137524 is 4257310462.

It is a super-2 number, since 2×2640137524² = 13940652291265701152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2640137524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640137527) 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, 14348482 + ... + 14348665.

It is an arithmetic number, because the mean of its divisors is an integer number (401760072).

Almost surely, 2^2640137524 is an apocalyptic number.

It is an amenable number.

2640137524 is a deficient number, since it is larger than the sum of its proper divisors (2180983340).

2640137524 is a wasteful number, since it uses less digits than its factorization.

2640137524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28697174 (or 28697172 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 2640137524 is about 51382.2685758424. The cubic root of 2640137524 is about 1382.1086442988.

Adding to 2640137524 its reverse (4257310462), we get a palindrome (6897447986).

The spelling of 2640137524 in words is "two billion, six hundred forty million, one hundred thirty-seven thousand, five hundred twenty-four".