16503106436 has 6 divisors (see below), whose sum is σ = 28880436270. Its totient is φ = 8251553216.

The previous prime is 16503106421. The next prime is 16503106453. The reversal of 16503106436 is 63460130561.

It can be written as a sum of positive squares in only one way, i.e., 10351841536 + 6151264900 = 101744^2 + 78430^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16503106396 and 16503106405.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2062888301 + ... + 2062888308.

It is an arithmetic number, because the mean of its divisors is an integer number (4813406045).

Almost surely, 2^16503106436 is an apocalyptic number.

It is an amenable number.

16503106436 is a deficient number, since it is larger than the sum of its proper divisors (12377329834).

16503106436 is a wasteful number, since it uses less digits than its factorization.

16503106436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4125776613 (or 4125776611 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

Adding to 16503106436 its reverse (63460130561), we get a palindrome (79963236997).

The spelling of 16503106436 in words is "sixteen billion, five hundred three million, one hundred six thousand, four hundred thirty-six".