6409564993 has 8 divisors (see below), whose sum is σ = 7063134848. Its totient is φ = 5778927504.

The previous prime is 6409564979. The next prime is 6409565027. The reversal of 6409564993 is 3994659046.

6409564993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6409564993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6409564193) 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, 5732505 + ... + 5733622.

It is an arithmetic number, because the mean of its divisors is an integer number (882891856).

Almost surely, 2^6409564993 is an apocalyptic number.

It is an amenable number.

6409564993 is a deficient number, since it is larger than the sum of its proper divisors (653569855).

6409564993 is a wasteful number, since it uses less digits than its factorization.

6409564993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11466183.

The product of its (nonzero) digits is 6298560, while the sum is 55.

The square root of 6409564993 is about 80059.7588867216. The cubic root of 6409564993 is about 1857.5600056454.

The spelling of 6409564993 in words is "six billion, four hundred nine million, five hundred sixty-four thousand, nine hundred ninety-three".