16550565516 has 48 divisors (see below), whose sum is σ = 42925482880. Its totient is φ = 5514719760.

The previous prime is 16550565503. The next prime is 16550565527. The reversal of 16550565516 is 61556505561.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264051 + ... + 320661.

Almost surely, 2^16550565516 is an apocalyptic number.

It is an amenable number.

16550565516 is an abundant number, since it is smaller than the sum of its proper divisors (26374917364).

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

16550565516 is a wasteful number, since it uses less digits than its factorization.

16550565516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59331 (or 59323 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 16550565516 in words is "sixteen billion, five hundred fifty million, five hundred sixty-five thousand, five hundred sixteen".