218138524622055 has 24 divisors (see below), whose sum is σ = 378120090439728. Its totient is φ = 116336449718016.

The previous prime is 218138524622021. The next prime is 218138524622077. The reversal of 218138524622055 is 550226425831812.

218138524622055 is a `hidden beast` number, since 2 + 1 + 8 + 1 + 3 + 8 + 5 + 2 + 4 + 622 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 218138524622055 - 2⁹ = 218138524621543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 218138524621992 and 218138524622010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84056562 + ... + 86612831.

It is an arithmetic number, because the mean of its divisors is an integer number (15755003768322).

Almost surely, 2^{218138524622055} is an apocalyptic number.

218138524622055 is a deficient number, since it is larger than the sum of its proper divisors (159981565817673).

218138524622055 is a wasteful number, since it uses less digits than its factorization.

218138524622055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170697807 (or 170697804 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 54.

The spelling of 218138524622055 in words is "two hundred eighteen trillion, one hundred thirty-eight billion, five hundred twenty-four million, six hundred twenty-two thousand, fifty-five".