220531500450 has 48 divisors (see below), whose sum is σ = 607686804960. Its totient is φ = 58808399760.

The previous prime is 220531500443. The next prime is 220531500481. The reversal of 220531500450 is 54005135022.

It is a happy number.

220531500450 is a `hidden beast` number, since 2 + 205 + 3 + 1 + 5 + 0 + 0 + 450 = 666.

220531500450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 23 ways as a sum of consecutive naturals, for example, 81676984 + ... + 81679683.

It is an arithmetic number, because the mean of its divisors is an integer number (12660141770).

Almost surely, 2^220531500450 is an apocalyptic number.

220531500450 is an abundant number, since it is smaller than the sum of its proper divisors (387155304510).

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

220531500450 is a wasteful number, since it uses less digits than its factorization.

220531500450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163356688 (or 163356677 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 220531500450 its reverse (54005135022), we get a palindrome (274536635472).

The spelling of 220531500450 in words is "two hundred twenty billion, five hundred thirty-one million, five hundred thousand, four hundred fifty".