220185238986 has 24 divisors (see below), whose sum is σ = 479733209280. Its totient is φ = 72985050216.

The previous prime is 220185238969. The next prime is 220185239039. The reversal of 220185238986 is 689832581022.

It is a happy number.

220185238986 is a `hidden beast` number, since 2 + 2 + 0 + 185 + 2 + 389 + 86 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34165810 + ... + 34172253.

It is an arithmetic number, because the mean of its divisors is an integer number (19988883720).

Almost surely, 2^220185238986 is an apocalyptic number.

220185238986 is an abundant number, since it is smaller than the sum of its proper divisors (259547970294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220185238986 is a wasteful number, since it uses less digits than its factorization.

220185238986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68338250 (or 68338247 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 220185238986 in words is "two hundred twenty billion, one hundred eighty-five million, two hundred thirty-eight thousand, nine hundred eighty-six".