216086281366 has 4 divisors (see below), whose sum is σ = 324129422052. Its totient is φ = 108043140682.

The previous prime is 216086281361. The next prime is 216086281373. The reversal of 216086281366 is 663182680612.

It is a happy number.

216086281366 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×216086281366² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216086281361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54021570340 + ... + 54021570343.

It is an arithmetic number, because the mean of its divisors is an integer number (81032355513).

Almost surely, 2^216086281366 is an apocalyptic number.

216086281366 is a deficient number, since it is larger than the sum of its proper divisors (108043140686).

216086281366 is a wasteful number, since it uses less digits than its factorization.

216086281366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108043140685.

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 216086281366 in words is "two hundred sixteen billion, eighty-six million, two hundred eighty-one thousand, three hundred sixty-six".