6445511463 has 8 divisors (see below), whose sum is σ = 8739676800. Its totient is φ = 4224176888.

The previous prime is 6445511447. The next prime is 6445511483. The reversal of 6445511463 is 3641155446.

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

It is a cyclic number.

It is not a de Polignac number, because 6445511463 - 2⁴ = 6445511447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445511483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18207483 + ... + 18207836.

It is an arithmetic number, because the mean of its divisors is an integer number (1092459600).

Almost surely, 2^6445511463 is an apocalyptic number.

6445511463 is a deficient number, since it is larger than the sum of its proper divisors (2294165337).

6445511463 is a wasteful number, since it uses less digits than its factorization.

6445511463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36415381.

The product of its digits is 172800, while the sum is 39.

The square root of 6445511463 is about 80283.9427469777. The cubic root of 6445511463 is about 1861.0260903912.

The spelling of 6445511463 in words is "six billion, four hundred forty-five million, five hundred eleven thousand, four hundred sixty-three".