16320003536 has 20 divisors (see below), whose sum is σ = 33480007812. Its totient is φ = 7680001536.

The previous prime is 16320003529. The next prime is 16320003551. The reversal of 16320003536 is 63530002361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4686223936 + 11633779600 = 68456^2 + 107860^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16320003499 and 16320003508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29999735 + ... + 30000278.

Almost surely, 2^16320003536 is an apocalyptic number.

16320003536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16320003536 is an abundant number, since it is smaller than the sum of its proper divisors (17160004276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16320003536 is a wasteful number, since it uses less digits than its factorization.

16320003536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60000038 (or 60000032 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 29.

Adding to 16320003536 its reverse (63530002361), we get a palindrome (79850005897).

The spelling of 16320003536 in words is "sixteen billion, three hundred twenty million, three thousand, five hundred thirty-six".