220531500445 has 8 divisors (see below), whose sum is σ = 264666661344. Its totient is φ = 176405959824.

The previous prime is 220531500443. The next prime is 220531500481. The reversal of 220531500445 is 544005135022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220531500445 - 2¹ = 220531500443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220531500443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2354539 + ... + 2446408.

It is an arithmetic number, because the mean of its divisors is an integer number (33083332668).

Almost surely, 2^220531500445 is an apocalyptic number.

It is an amenable number.

220531500445 is a deficient number, since it is larger than the sum of its proper divisors (44135160899).

220531500445 is an equidigital number, since it uses as much as digits as its factorization.

220531500445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810139.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 220531500445 its reverse (544005135022), we get a palindrome (764536635467).

The spelling of 220531500445 in words is "two hundred twenty billion, five hundred thirty-one million, five hundred thousand, four hundred forty-five".