220163625642506 has 48 divisors (see below), whose sum is σ = 423804652838280. Its totient is φ = 84973363937280.

The previous prime is 220163625642461. The next prime is 220163625642509. The reversal of 220163625642506 is 605246526361022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 48386979405625 + 171776646236881 = 6956075^2 + 13106359^2 .

It is not an unprimeable number, because it can be changed into a prime (220163625642509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2107422071 + ... + 2107526538.

Almost surely, 2^{220163625642506} is an apocalyptic number.

220163625642506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

220163625642506 is a deficient number, since it is larger than the sum of its proper divisors (203641027195774).

220163625642506 is a wasteful number, since it uses less digits than its factorization.

220163625642506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4214948679 (or 4214948672 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 50.

The spelling of 220163625642506 in words is "two hundred twenty trillion, one hundred sixty-three billion, six hundred twenty-five million, six hundred forty-two thousand, five hundred six".