218205642382 has 16 divisors (see below), whose sum is σ = 402841186272. Its totient is φ = 86323111200.

The previous prime is 218205642379. The next prime is 218205642401. The reversal of 218205642382 is 283246502812.

218205642382 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×218205642382² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599465869 + ... + 599466232.

It is an arithmetic number, because the mean of its divisors is an integer number (25177574142).

Almost surely, 2^218205642382 is an apocalyptic number.

218205642382 is a deficient number, since it is larger than the sum of its proper divisors (184635543890).

218205642382 is a wasteful number, since it uses less digits than its factorization.

218205642382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198932123.

The product of its (nonzero) digits is 368640, while the sum is 43.

The spelling of 218205642382 in words is "two hundred eighteen billion, two hundred five million, six hundred forty-two thousand, three hundred eighty-two".