16506060066 has 32 divisors (see below), whose sum is σ = 37533165120. Its totient is φ = 5374065312.

The previous prime is 16506060041. The next prime is 16506060073. The reversal of 16506060066 is 66006060561.

It is a self number, because there is not a number n which added to its sum of digits gives 16506060066.

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, 3551955 + ... + 3556598.

It is an arithmetic number, because the mean of its divisors is an integer number (1172911410).

Almost surely, 2^16506060066 is an apocalyptic number.

16506060066 is an abundant number, since it is smaller than the sum of its proper divisors (21027105054).

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

16506060066 is a wasteful number, since it uses less digits than its factorization.

16506060066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7108607 (or 7108601 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 16506060066 in words is "sixteen billion, five hundred six million, sixty thousand, sixty-six".