3555221004555 has 64 divisors (see below), whose sum is σ = 6476464926720. Its totient is φ = 1648496432000.

The previous prime is 3555221004553. The next prime is 3555221004557. The reversal of 3555221004555 is 5554001225553.

It is an interprime number because it is at equal distance from previous prime (3555221004553) and next prime (3555221004557).

It is not a de Polignac number, because 3555221004555 - 2¹ = 3555221004553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3555221004553) 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 63 ways as a sum of consecutive naturals, for example, 21362656 + ... + 21528434.

It is an arithmetic number, because the mean of its divisors is an integer number (101194764480).

Almost surely, 2^{3555221004555} is an apocalyptic number.

3555221004555 is a deficient number, since it is larger than the sum of its proper divisors (2921243922165).

3555221004555 is a wasteful number, since it uses less digits than its factorization.

3555221004555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171472.

The product of its (nonzero) digits is 750000, while the sum is 42.

The spelling of 3555221004555 in words is "three trillion, five hundred fifty-five billion, two hundred twenty-one million, four thousand, five hundred fifty-five".