13640240210 has 8 divisors (see below), whose sum is σ = 24552432396. Its totient is φ = 5456096080.

The previous prime is 13640240203. The next prime is 13640240213. The reversal of 13640240210 is 1204204631.

It can be written as a sum of positive squares in 2 ways, for example, as 12525414889 + 1114825321 = 111917^2 + 33389^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13640240213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682012001 + ... + 682012020.

Almost surely, 2^13640240210 is an apocalyptic number.

13640240210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13640240210 is a deficient number, since it is larger than the sum of its proper divisors (10912192186).

13640240210 is a wasteful number, since it uses less digits than its factorization.

13640240210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364024028.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 13640240210 its reverse (1204204631), we get a palindrome (14844444841).

The spelling of 13640240210 in words is "thirteen billion, six hundred forty million, two hundred forty thousand, two hundred ten".