16016016665 has 16 divisors (see below), whose sum is σ = 21099977280. Its totient is φ = 11573814720.

The previous prime is 16016016641. The next prime is 16016016671. The reversal of 16016016665 is 56661061061.

It is a happy number.

It is not a de Polignac number, because 16016016665 - 2¹² = 16016012569 is a prime.

It is a Curzon number.

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, 918755 + ... + 936024.

It is an arithmetic number, because the mean of its divisors is an integer number (1318748580).

Almost surely, 2^16016016665 is an apocalyptic number.

It is an amenable number.

16016016665 is a deficient number, since it is larger than the sum of its proper divisors (5083960615).

16016016665 is a wasteful number, since it uses less digits than its factorization.

16016016665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854952.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 16016016665 in words is "sixteen billion, sixteen million, sixteen thousand, six hundred sixty-five".