16327421636 has 12 divisors (see below), whose sum is σ = 29269890300. Its totient is φ = 7964595840.

The previous prime is 16327421633. The next prime is 16327421681. The reversal of 16327421636 is 63612472361.

16327421636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6303407236 + 10024014400 = 79394^2 + 100120^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 16327421593 and 16327421602.

It is not an unprimeable number, because it can be changed into a prime (16327421633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49778561 + ... + 49778888.

It is an arithmetic number, because the mean of its divisors is an integer number (2439157525).

Almost surely, 2^16327421636 is an apocalyptic number.

It is an amenable number.

16327421636 is a deficient number, since it is larger than the sum of its proper divisors (12942468664).

16327421636 is a wasteful number, since it uses less digits than its factorization.

16327421636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99557494 (or 99557492 counting only the distinct ones).

The product of its digits is 217728, while the sum is 41.

Adding to 16327421636 its reverse (63612472361), we get a palindrome (79939893997).

The spelling of 16327421636 in words is "sixteen billion, three hundred twenty-seven million, four hundred twenty-one thousand, six hundred thirty-six".