6445113445 has 8 divisors (see below), whose sum is σ = 7821037080. Its totient is φ = 5098156800.

The previous prime is 6445113421. The next prime is 6445113461. The reversal of 6445113445 is 5443115446.

It can be written as a sum of positive squares in 4 ways, for example, as 32467204 + 6412646241 = 5698^2 + 80079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6445113445 - 2⁷ = 6445113317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7241256 + ... + 7242145.

It is an arithmetic number, because the mean of its divisors is an integer number (977629635).

Almost surely, 2^6445113445 is an apocalyptic number.

It is an amenable number.

6445113445 is a deficient number, since it is larger than the sum of its proper divisors (1375923635).

6445113445 is a wasteful number, since it uses less digits than its factorization.

6445113445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14483495.

The product of its digits is 115200, while the sum is 37.

The square root of 6445113445 is about 80281.4638942265. The cubic root of 6445113445 is about 1860.9877827444.

The spelling of 6445113445 in words is "six billion, four hundred forty-five million, one hundred thirteen thousand, four hundred forty-five".