210240653513 has 8 divisors (see below), whose sum is σ = 233240787360. Its totient is φ = 187888410880.

The previous prime is 210240653509. The next prime is 210240653543. The reversal of 210240653513 is 315356042012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 210240653513 - 2² = 210240653509 is a prime.

It is a super-2 number, since 2×210240653513² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210240653513.

It is not an unprimeable number, because it can be changed into a prime (210240653543) 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, 161972120 + ... + 161973417.

It is an arithmetic number, because the mean of its divisors is an integer number (29155098420).

Almost surely, 2^210240653513 is an apocalyptic number.

It is an amenable number.

210240653513 is a deficient number, since it is larger than the sum of its proper divisors (23000133847).

210240653513 is a wasteful number, since it uses less digits than its factorization.

210240653513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323945607.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 210240653513 its reverse (315356042012), we get a palindrome (525596695525).

The spelling of 210240653513 in words is "two hundred ten billion, two hundred forty million, six hundred fifty-three thousand, five hundred thirteen".