6445345215 has 16 divisors (see below), whose sum is σ = 10313588736. Its totient is φ = 3437172000.

The previous prime is 6445345183. The next prime is 6445345219. The reversal of 6445345215 is 5125435446.

It is not a de Polignac number, because 6445345215 - 2⁵ = 6445345183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445345219) 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, 219450 + ... + 247080.

It is an arithmetic number, because the mean of its divisors is an integer number (644599296).

Almost surely, 2^6445345215 is an apocalyptic number.

6445345215 is a deficient number, since it is larger than the sum of its proper divisors (3868243521).

6445345215 is a wasteful number, since it uses less digits than its factorization.

6445345215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43190.

The product of its digits is 288000, while the sum is 39.

The square root of 6445345215 is about 80282.9073651422. The cubic root of 6445345215 is about 1861.0100898754.

The spelling of 6445345215 in words is "six billion, four hundred forty-five million, three hundred forty-five thousand, two hundred fifteen".