16550565655 has 8 divisors (see below), whose sum is σ = 21388423392. Its totient is φ = 12221956128.

The previous prime is 16550565637. The next prime is 16550565671. The reversal of 16550565655 is 55656505561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16550565655 - 2⁷ = 16550565527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16550565599 and 16550565608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127311979 + ... + 127312108.

It is an arithmetic number, because the mean of its divisors is an integer number (2673552924).

Almost surely, 2^16550565655 is an apocalyptic number.

16550565655 is a deficient number, since it is larger than the sum of its proper divisors (4837857737).

16550565655 is a wasteful number, since it uses less digits than its factorization.

16550565655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254624105.

The product of its (nonzero) digits is 3375000, while the sum is 49.

The spelling of 16550565655 in words is "sixteen billion, five hundred fifty million, five hundred sixty-five thousand, six hundred fifty-five".