220353302545 has 8 divisors (see below), whose sum is σ = 264433081896. Its totient is φ = 176276562816.

The previous prime is 220353302509. The next prime is 220353302597. The reversal of 220353302545 is 545203353022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3153496336 + 217199806209 = 56156^2 + 466047^2 .

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 220353302545 - 2⁷ = 220353302417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220353302545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597252 + ... + 892981.

It is an arithmetic number, because the mean of its divisors is an integer number (33054135237).

Almost surely, 2^220353302545 is an apocalyptic number.

It is an amenable number.

220353302545 is a deficient number, since it is larger than the sum of its proper divisors (44079779351).

220353302545 is a wasteful number, since it uses less digits than its factorization.

220353302545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519811.

The product of its (nonzero) digits is 108000, while the sum is 34.

Adding to 220353302545 its reverse (545203353022), we get a palindrome (765556655567).

The spelling of 220353302545 in words is "two hundred twenty billion, three hundred fifty-three million, three hundred two thousand, five hundred forty-five".