218039414161 has 4 divisors (see below), whose sum is σ = 218040393024. Its totient is φ = 218038435300.

The previous prime is 218039414129. The next prime is 218039414207. The reversal of 218039414161 is 161414930812.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 218039414161 - 2⁵ = 218039414129 is a prime.

It is a super-2 number, since 2×218039414161² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218039414101) 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, 24756 + ... + 660826.

It is an arithmetic number, because the mean of its divisors is an integer number (54510098256).

Almost surely, 2^218039414161 is an apocalyptic number.

It is an amenable number.

218039414161 is a deficient number, since it is larger than the sum of its proper divisors (978863).

218039414161 is an equidigital number, since it uses as much as digits as its factorization.

218039414161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978862.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 218039414161 in words is "two hundred eighteen billion, thirty-nine million, four hundred fourteen thousand, one hundred sixty-one".