6445868359 has 8 divisors (see below), whose sum is σ = 7800042528. Its totient is φ = 5200028160.

The previous prime is 6445868339. The next prime is 6445868369. The reversal of 6445868359 is 9538685446.

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 6445868359 - 2⁵ = 6445868327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445868339) 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, 27083362 + ... + 27083599.

It is an arithmetic number, because the mean of its divisors is an integer number (975005316).

Almost surely, 2^6445868359 is an apocalyptic number.

6445868359 is a deficient number, since it is larger than the sum of its proper divisors (1354174169).

6445868359 is a wasteful number, since it uses less digits than its factorization.

6445868359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54166985.

The product of its digits is 24883200, while the sum is 58.

The square root of 6445868359 is about 80286.1654271768. The cubic root of 6445868359 is about 1861.0604388683.

The spelling of 6445868359 in words is "six billion, four hundred forty-five million, eight hundred sixty-eight thousand, three hundred fifty-nine".