218432272101485 has 16 divisors (see below), whose sum is σ = 282282860898864. Its totient is φ = 161303171469312.

The previous prime is 218432272101359. The next prime is 218432272101539. The reversal of 218432272101485 is 584101272234812.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 78076645537801 + 140355626563684 = 8836099^2 + 11847178^2 .

It is a cyclic number.

It is not a de Polignac number, because 218432272101485 - 2³² = 218427977134189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9419789 + ... + 22925901.

It is an arithmetic number, because the mean of its divisors is an integer number (17642678806179).

Almost surely, 2^{218432272101485} is an apocalyptic number.

It is an amenable number.

218432272101485 is a deficient number, since it is larger than the sum of its proper divisors (63850588797379).

218432272101485 is a wasteful number, since it uses less digits than its factorization.

218432272101485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13754944.

The product of its (nonzero) digits is 1720320, while the sum is 50.

The spelling of 218432272101485 in words is "two hundred eighteen trillion, four hundred thirty-two billion, two hundred seventy-two million, one hundred one thousand, four hundred eighty-five".