220353018953 has 4 divisors (see below), whose sum is σ = 223965363588. Its totient is φ = 216740674320.

The previous prime is 220353018923. The next prime is 220353018971. The reversal of 220353018953 is 359810353022.

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 43585747984 + 176767270969 = 208772^2 + 420437^2 .

It is a cyclic number.

It is not a de Polignac number, because 220353018953 - 2³⁶ = 151633542217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220353018953.

It is not an unprimeable number, because it can be changed into a prime (220353018923) 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, 1806172226 + ... + 1806172347.

It is an arithmetic number, because the mean of its divisors is an integer number (55991340897).

Almost surely, 2^220353018953 is an apocalyptic number.

It is an amenable number.

220353018953 is a deficient number, since it is larger than the sum of its proper divisors (3612344635).

220353018953 is an equidigital number, since it uses as much as digits as its factorization.

220353018953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612344634.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 220353018953 in words is "two hundred twenty billion, three hundred fifty-three million, eighteen thousand, nine hundred fifty-three".