216150102661 has 4 divisors (see below), whose sum is σ = 216762426252. Its totient is φ = 215537779072.

The previous prime is 216150102617. The next prime is 216150102689. The reversal of 216150102661 is 166201051612.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36124704225 + 180025398436 = 190065^2 + 424294^2 .

It is a cyclic number.

It is not a de Polignac number, because 216150102661 - 2⁹ = 216150102149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216150102601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306161266 + ... + 306161971.

It is an arithmetic number, because the mean of its divisors is an integer number (54190606563).

Almost surely, 2^216150102661 is an apocalyptic number.

It is an amenable number.

216150102661 is a deficient number, since it is larger than the sum of its proper divisors (612323591).

216150102661 is an equidigital number, since it uses as much as digits as its factorization.

216150102661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612323590.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 216150102661 in words is "two hundred sixteen billion, one hundred fifty million, one hundred two thousand, six hundred sixty-one".