6513240216403 has 4 divisors (see below), whose sum is σ = 6513283750248. Its totient is φ = 6513196682560.

The previous prime is 6513240216383. The next prime is 6513240216419. The reversal of 6513240216403 is 3046120423156.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6513240216403 - 2²¹ = 6513238119251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6513240216433) 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, 21541726 + ... + 21841987.

It is an arithmetic number, because the mean of its divisors is an integer number (1628320937562).

Almost surely, 2^{6513240216403} is an apocalyptic number.

6513240216403 is a deficient number, since it is larger than the sum of its proper divisors (43533845).

6513240216403 is a wasteful number, since it uses less digits than its factorization.

6513240216403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43533844.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 6513240216403 its reverse (3046120423156), we get a palindrome (9559360639559).

The spelling of 6513240216403 in words is "six trillion, five hundred thirteen billion, two hundred forty million, two hundred sixteen thousand, four hundred three".