16065061556555 has 16 divisors (see below), whose sum is σ = 21064711375584. Its totient is φ = 11664744833280.

The previous prime is 16065061556539. The next prime is 16065061556561. The reversal of 16065061556555 is 55565516056061.

It is not a de Polignac number, because 16065061556555 - 2⁴ = 16065061556539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16065061556555.

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, 236669492 + ... + 236737361.

It is an arithmetic number, because the mean of its divisors is an integer number (1316544460974).

Almost surely, 2^{16065061556555} is an apocalyptic number.

16065061556555 is a deficient number, since it is larger than the sum of its proper divisors (4999649819029).

16065061556555 is a wasteful number, since it uses less digits than its factorization.

16065061556555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473407486.

The product of its (nonzero) digits is 20250000, while the sum is 56.

The spelling of 16065061556555 in words is "sixteen trillion, sixty-five billion, sixty-one million, five hundred fifty-six thousand, five hundred fifty-five".