216101641 has 4 divisors (see below), whose sum is σ = 246973312. Its totient is φ = 185229972.

The previous prime is 216101623. The next prime is 216101647. The reversal of 216101641 is 146101612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216101641 - 2⁵ = 216101609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216101647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15435825 + ... + 15435838.

It is an arithmetic number, because the mean of its divisors is an integer number (61743328).

Almost surely, 2^216101641 is an apocalyptic number.

It is an amenable number.

216101641 is a deficient number, since it is larger than the sum of its proper divisors (30871671).

216101641 is an equidigital number, since it uses as much as digits as its factorization.

216101641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30871670.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 216101641 is about 14700.3959470485. The cubic root of 216101641 is about 600.0940972791.

The spelling of 216101641 in words is "two hundred sixteen million, one hundred one thousand, six hundred forty-one".