218220595850 has 12 divisors (see below), whose sum is σ = 405890308374. Its totient is φ = 87288238320.

The previous prime is 218220595843. The next prime is 218220595871. The reversal of 218220595850 is 58595022812.

218220595850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 86938291609 + 131282304241 = 294853^2 + 362329^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 218220595795 and 218220595804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2182205909 + ... + 2182206008.

Almost surely, 2^218220595850 is an apocalyptic number.

218220595850 is a deficient number, since it is larger than the sum of its proper divisors (187669712524).

218220595850 is a wasteful number, since it uses less digits than its factorization.

218220595850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4364411929 (or 4364411924 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 47.

The spelling of 218220595850 in words is "two hundred eighteen billion, two hundred twenty million, five hundred ninety-five thousand, eight hundred fifty".