2640503517 has 8 divisors (see below), whose sum is σ = 3530479680. Its totient is φ = 1755431520.

The previous prime is 2640503491. The next prime is 2640503519. The reversal of 2640503517 is 7153050462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2640503517 - 2¹⁰ = 2640502493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640503519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1224784 + ... + 1226937.

It is an arithmetic number, because the mean of its divisors is an integer number (441309960).

Almost surely, 2^2640503517 is an apocalyptic number.

It is an amenable number.

2640503517 is a deficient number, since it is larger than the sum of its proper divisors (889976163).

2640503517 is a wasteful number, since it uses less digits than its factorization.

2640503517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452083.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 2640503517 is about 51385.8299242116. The cubic root of 2640503517 is about 1382.1725069716.

Adding to 2640503517 its reverse (7153050462), we get a palindrome (9793553979).

The spelling of 2640503517 in words is "two billion, six hundred forty million, five hundred three thousand, five hundred seventeen".