16555525512516 has 36 divisors (see below), whose sum is σ = 42219031885212. Its totient is φ = 5469672144384.

The previous prime is 16555525512497. The next prime is 16555525512517. The reversal of 16555525512516 is 61521552555561.

16555525512516 is a `hidden beast` number, since 1 + 6 + 5 + 5 + 5 + 52 + 551 + 25 + 16 = 666.

16555525512516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5461989668100 + 11093535844416 = 2337090^2 + 3330696^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16555525512517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2034844201 + ... + 2034852336.

Almost surely, 2^{16555525512516} is an apocalyptic number.

It is an amenable number.

16555525512516 is an abundant number, since it is smaller than the sum of its proper divisors (25663506372696).

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

16555525512516 is a wasteful number, since it uses less digits than its factorization.

16555525512516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069696660 (or 4069696655 counting only the distinct ones).

The product of its digits is 11250000, while the sum is 54.

The spelling of 16555525512516 in words is "sixteen trillion, five hundred fifty-five billion, five hundred twenty-five million, five hundred twelve thousand, five hundred sixteen".