16551276516 has 36 divisors (see below), whose sum is σ = 41937364924. Its totient is φ = 5503982400.

The previous prime is 16551276509. The next prime is 16551276569. The reversal of 16551276516 is 61567215561.

It is a happy number.

16551276516 is a `hidden beast` number, since 1 + 6 + 5 + 5 + 127 + 6 + 516 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8750854116 + 7800422400 = 93546^2 + 88320^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 in 11 ways as a sum of consecutive naturals, for example, 530875 + ... + 561186.

Almost surely, 2^16551276516 is an apocalyptic number.

It is an amenable number.

16551276516 is an abundant number, since it is smaller than the sum of its proper divisors (25386088408).

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

16551276516 is a wasteful number, since it uses less digits than its factorization.

16551276516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092492 (or 1092487 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The spelling of 16551276516 in words is "sixteen billion, five hundred fifty-one million, two hundred seventy-six thousand, five hundred sixteen".