242208661986 has 24 divisors (see below), whose sum is σ = 524796832560. Its totient is φ = 80734467096.

The previous prime is 242208661979. The next prime is 242208661987. The reversal of 242208661986 is 689166802242.

242208661986 is a `hidden beast` number, since 2 + 422 + 0 + 86 + 61 + 9 + 86 = 666.

It is not an unprimeable number, because it can be changed into a prime (242208661987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 913161 + ... + 1148163.

It is an arithmetic number, because the mean of its divisors is an integer number (21866534690).

Almost surely, 2^242208661986 is an apocalyptic number.

242208661986 is an abundant number, since it is smaller than the sum of its proper divisors (282588170574).

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

242208661986 is a wasteful number, since it uses less digits than its factorization.

242208661986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292270 (or 292267 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 242208661986 in words is "two hundred forty-two billion, two hundred eight million, six hundred sixty-one thousand, nine hundred eighty-six".