1663595555223 has 32 divisors (see below), whose sum is σ = 2572256673792. Its totient is φ = 936671954400.

The previous prime is 1663595555197. The next prime is 1663595555329. The reversal of 1663595555223 is 3225555953661.

It is not a de Polignac number, because 1663595555223 - 2⁵ = 1663595555191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663595505223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2144068 + ... + 2814998.

It is an arithmetic number, because the mean of its divisors is an integer number (80383021056).

Almost surely, 2^{1663595555223} is an apocalyptic number.

1663595555223 is a deficient number, since it is larger than the sum of its proper divisors (908661118569).

1663595555223 is a wasteful number, since it uses less digits than its factorization.

1663595555223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672675.

The product of its digits is 36450000, while the sum is 57.

The spelling of 1663595555223 in words is "one trillion, six hundred sixty-three billion, five hundred ninety-five million, five hundred fifty-five thousand, two hundred twenty-three".