6445480433 has 6 divisors (see below), whose sum is σ = 7497803826. Its totient is φ = 5524697472.

The previous prime is 6445480427. The next prime is 6445480499. The reversal of 6445480433 is 3340845446.

It can be written as a sum of positive squares in only one way, i.e., 5530599424 + 914881009 = 74368^2 + 30247^2 .

It is not a de Polignac number, because 6445480433 - 2⁶ = 6445480369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6445480403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65770160 + ... + 65770257.

It is an arithmetic number, because the mean of its divisors is an integer number (1249633971).

Almost surely, 2^6445480433 is an apocalyptic number.

It is an amenable number.

6445480433 is a deficient number, since it is larger than the sum of its proper divisors (1052323393).

6445480433 is a wasteful number, since it uses less digits than its factorization.

6445480433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131540431 (or 131540424 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 41.

The square root of 6445480433 is about 80283.7494951500. The cubic root of 6445480433 is about 1861.0231039340.

The spelling of 6445480433 in words is "six billion, four hundred forty-five million, four hundred eighty thousand, four hundred thirty-three".