16320244647 has 64 divisors (see below), whose sum is σ = 26830393344. Its totient is φ = 8612144640.

The previous prime is 16320244643. The next prime is 16320244663. The reversal of 16320244647 is 74644202361.

It is not a de Polignac number, because 16320244647 - 2² = 16320244643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16320244643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6767872 + ... + 6770282.

It is an arithmetic number, because the mean of its divisors is an integer number (419224896).

Almost surely, 2^16320244647 is an apocalyptic number.

16320244647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16320244647 is a deficient number, since it is larger than the sum of its proper divisors (10510148697).

16320244647 is a wasteful number, since it uses less digits than its factorization.

16320244647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788.

The product of its (nonzero) digits is 193536, while the sum is 39.

The spelling of 16320244647 in words is "sixteen billion, three hundred twenty million, two hundred forty-four thousand, six hundred forty-seven".