6445969296 has 80 divisors (see below), whose sum is σ = 17990140224. Its totient is φ = 1977057792.

The previous prime is 6445969261. The next prime is 6445969331. The reversal of 6445969296 is 6929695446.

It is an interprime number because it is at equal distance from previous prime (6445969261) and next prime (6445969331).

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, 181515 + ... + 214101.

Almost surely, 2^6445969296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6445969296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8995070112).

6445969296 is an abundant number, since it is smaller than the sum of its proper divisors (11544170928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6445969296 is a wasteful number, since it uses less digits than its factorization.

6445969296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32928 (or 32922 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 60.

The square root of 6445969296 is about 80286.7940323936. The cubic root of 6445969296 is about 1861.0701530432.

The spelling of 6445969296 in words is "six billion, four hundred forty-five million, nine hundred sixty-nine thousand, two hundred ninety-six".