16505211016 has 16 divisors (see below), whose sum is σ = 35368309440. Its totient is φ = 7073661840.

The previous prime is 16505210993. The next prime is 16505211017. The reversal of 16505211016 is 61011250561.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (16505211017) 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, 147367900 + ... + 147368011.

It is an arithmetic number, because the mean of its divisors is an integer number (2210519340).

Almost surely, 2^16505211016 is an apocalyptic number.

It is an amenable number.

16505211016 is an abundant number, since it is smaller than the sum of its proper divisors (18863098424).

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

16505211016 is a wasteful number, since it uses less digits than its factorization.

16505211016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294735924 (or 294735920 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

Adding to 16505211016 its reverse (61011250561), we get a palindrome (77516461577).

The spelling of 16505211016 in words is "sixteen billion, five hundred five million, two hundred eleven thousand, sixteen".