218102140145 has 8 divisors (see below), whose sum is σ = 261767258280. Its totient is φ = 174451918720.

The previous prime is 218102140097. The next prime is 218102140147. The reversal of 218102140145 is 541041201812.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19678096 + 218082462049 = 4436^2 + 466993^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 218102140145 - 2²² = 218097945841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (218102140147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3691940 + ... + 3750549.

It is an arithmetic number, because the mean of its divisors is an integer number (32720907285).

Almost surely, 2^218102140145 is an apocalyptic number.

It is an amenable number.

218102140145 is a deficient number, since it is larger than the sum of its proper divisors (43665118135).

218102140145 is an equidigital number, since it uses as much as digits as its factorization.

218102140145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448355.

The product of its (nonzero) digits is 2560, while the sum is 29.

Adding to 218102140145 its reverse (541041201812), we get a palindrome (759143341957).

The spelling of 218102140145 in words is "two hundred eighteen billion, one hundred two million, one hundred forty thousand, one hundred forty-five".