6442111313 has 4 divisors (see below), whose sum is σ = 7027757808. Its totient is φ = 5856464820.

The previous prime is 6442111307. The next prime is 6442111369. The reversal of 6442111313 is 3131112446.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6442111313 - 2¹⁴ = 6442094929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6442111813) 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, 292823231 + ... + 292823252.

It is an arithmetic number, because the mean of its divisors is an integer number (1756939452).

Almost surely, 2^6442111313 is an apocalyptic number.

It is an amenable number.

6442111313 is a deficient number, since it is larger than the sum of its proper divisors (585646495).

6442111313 is a wasteful number, since it uses less digits than its factorization.

6442111313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585646494.

The product of its digits is 1728, while the sum is 26.

The square root of 6442111313 is about 80262.7641749273. The cubic root of 6442111313 is about 1860.6987886763.

Adding to 6442111313 its reverse (3131112446), we get a palindrome (9573223759).

The spelling of 6442111313 in words is "six billion, four hundred forty-two million, one hundred eleven thousand, three hundred thirteen".