216060170665 has 16 divisors (see below), whose sum is σ = 259814318400. Its totient is φ = 172487109312.

The previous prime is 216060170639. The next prime is 216060170687. The reversal of 216060170665 is 566071060612.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216060170665 is a prime.

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, 4696746 + ... + 4742524.

It is an arithmetic number, because the mean of its divisors is an integer number (16238394900).

Almost surely, 2^216060170665 is an apocalyptic number.

It is an amenable number.

216060170665 is a deficient number, since it is larger than the sum of its proper divisors (43754147735).

216060170665 is a wasteful number, since it uses less digits than its factorization.

216060170665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47736.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 216060170665 in words is "two hundred sixteen billion, sixty million, one hundred seventy thousand, six hundred sixty-five".