16510022012 has 48 divisors (see below), whose sum is σ = 32979889152. Its totient is φ = 7158550080.

The previous prime is 16510021999. The next prime is 16510022017. The reversal of 16510022012 is 21022001561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16510022017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349178 + ... + 393630.

It is an arithmetic number, because the mean of its divisors is an integer number (687081024).

Almost surely, 2^16510022012 is an apocalyptic number.

It is an amenable number.

16510022012 is a deficient number, since it is larger than the sum of its proper divisors (16469867140).

16510022012 is a wasteful number, since it uses less digits than its factorization.

16510022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44858 (or 44856 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 16510022012 its reverse (21022001561), we get a palindrome (37532023573).

The spelling of 16510022012 in words is "sixteen billion, five hundred ten million, twenty-two thousand, twelve".