16055515610066 has 4 divisors (see below), whose sum is σ = 24083273415102. Its totient is φ = 8027757805032.

The previous prime is 16055515610027. The next prime is 16055515610117. The reversal of 16055515610066 is 66001651555061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15535776987025 + 519738623041 = 3941545^2 + 720929^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16055515610066.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4013878902515 + ... + 4013878902518.

Almost surely, 2^{16055515610066} is an apocalyptic number.

16055515610066 is a deficient number, since it is larger than the sum of its proper divisors (8027757805036).

16055515610066 is an equidigital number, since it uses as much as digits as its factorization.

16055515610066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8027757805035.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 16055515610066 in words is "sixteen trillion, fifty-five billion, five hundred fifteen million, six hundred ten thousand, sixty-six".