6421322013 has 16 divisors (see below), whose sum is σ = 8868014400. Its totient is φ = 4128122880.

The previous prime is 6421321997. The next prime is 6421322021. The reversal of 6421322013 is 3102231246.

It is not a de Polignac number, because 6421322013 - 2⁴ = 6421321997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6421342013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25053 + ... + 116061.

It is an arithmetic number, because the mean of its divisors is an integer number (554250900).

Almost surely, 2^6421322013 is an apocalyptic number.

It is an amenable number.

6421322013 is a deficient number, since it is larger than the sum of its proper divisors (2446692387).

6421322013 is a wasteful number, since it uses less digits than its factorization.

6421322013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91852.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 6421322013 is about 80133.1517725342. The cubic root of 6421322013 is about 1858.6950816599.

Adding to 6421322013 its reverse (3102231246), we get a palindrome (9523553259).

The spelling of 6421322013 in words is "six billion, four hundred twenty-one million, three hundred twenty-two thousand, thirteen".