220528553893 has 4 divisors (see below), whose sum is σ = 220533233580. Its totient is φ = 220523874208.

The previous prime is 220528553881. The next prime is 220528553923. The reversal of 220528553893 is 398355825022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101695296609 + 118833257284 = 318897^2 + 344722^2 .

It is a cyclic number.

It is not a de Polignac number, because 220528553893 - 2⁹ = 220528553381 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 220528553893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220528553803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2268430 + ... + 2363647.

It is an arithmetic number, because the mean of its divisors is an integer number (55133308395).

Almost surely, 2^220528553893 is an apocalyptic number.

It is an amenable number.

220528553893 is a deficient number, since it is larger than the sum of its proper divisors (4679687).

220528553893 is an equidigital number, since it uses as much as digits as its factorization.

220528553893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679686.

The product of its (nonzero) digits is 5184000, while the sum is 52.

The spelling of 220528553893 in words is "two hundred twenty billion, five hundred twenty-eight million, five hundred fifty-three thousand, eight hundred ninety-three".