16352421847 has 4 divisors (see below), whose sum is σ = 16352870760. Its totient is φ = 16351972936.

The previous prime is 16352421823. The next prime is 16352421889. The reversal of 16352421847 is 74812425361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16352421847 - 2²³ = 16344033239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16352421647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164473 + ... + 244450.

It is an arithmetic number, because the mean of its divisors is an integer number (4088217690).

Almost surely, 2^16352421847 is an apocalyptic number.

16352421847 is a deficient number, since it is larger than the sum of its proper divisors (448913).

16352421847 is an equidigital number, since it uses as much as digits as its factorization.

16352421847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448912.

The product of its digits is 322560, while the sum is 43.

The spelling of 16352421847 in words is "sixteen billion, three hundred fifty-two million, four hundred twenty-one thousand, eight hundred forty-seven".