6445346215 has 16 divisors (see below), whose sum is σ = 9642908160. Its totient is φ = 4017877920.

The previous prime is 6445346207. The next prime is 6445346233. The reversal of 6445346215 is 5126435446.

It is not a de Polignac number, because 6445346215 - 2³ = 6445346207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8370195 + ... + 8370964.

It is an arithmetic number, because the mean of its divisors is an integer number (602681760).

Almost surely, 2^6445346215 is an apocalyptic number.

6445346215 is a deficient number, since it is larger than the sum of its proper divisors (3197561945).

6445346215 is a wasteful number, since it uses less digits than its factorization.

6445346215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16741182.

The product of its digits is 345600, while the sum is 40.

The square root of 6445346215 is about 80282.9135931177. The cubic root of 6445346215 is about 1861.0101861210.

The spelling of 6445346215 in words is "six billion, four hundred forty-five million, three hundred forty-six thousand, two hundred fifteen".