355555220554223 has 4 divisors (see below), whose sum is σ = 364227299104368. Its totient is φ = 346883142004080.

The previous prime is 355555220554217. The next prime is 355555220554381. The reversal of 355555220554223 is 322455022555553.

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

It is a cyclic number.

It is not a de Polignac number, because 355555220554223 - 2¹⁸ = 355555220292079 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 (355555220554823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4336039275011 + ... + 4336039275092.

It is an arithmetic number, because the mean of its divisors is an integer number (91056824776092).

Almost surely, 2^{355555220554223} is an apocalyptic number.

355555220554223 is a deficient number, since it is larger than the sum of its proper divisors (8672078550145).

355555220554223 is an equidigital number, since it uses as much as digits as its factorization.

355555220554223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8672078550144.

The product of its (nonzero) digits is 45000000, while the sum is 53.

The spelling of 355555220554223 in words is "three hundred fifty-five trillion, five hundred fifty-five billion, two hundred twenty million, five hundred fifty-four thousand, two hundred twenty-three".