216668777031169 has 16 divisors (see below), whose sum is σ = 218306577945600. Its totient is φ = 215033501247040.

The previous prime is 216668777031167. The next prime is 216668777031199. The reversal of 216668777031169 is 961130777866612.

It is a cyclic number.

It is not a de Polignac number, because 216668777031169 - 2¹ = 216668777031167 is a prime.

It is a super-2 number, since 2×216668777031169² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216668777031098 and 216668777031107.

It is not an unprimeable number, because it can be changed into a prime (216668777031163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 854221764 + ... + 854475370.

It is an arithmetic number, because the mean of its divisors is an integer number (13644161121600).

Almost surely, 2^{216668777031169} is an apocalyptic number.

It is an amenable number.

216668777031169 is a deficient number, since it is larger than the sum of its proper divisors (1637800914431).

216668777031169 is a wasteful number, since it uses less digits than its factorization.

216668777031169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258560.

The product of its (nonzero) digits is 192036096, while the sum is 70.

The spelling of 216668777031169 in words is "two hundred sixteen trillion, six hundred sixty-eight billion, seven hundred seventy-seven million, thirty-one thousand, one hundred sixty-nine".