221543164565575 has 12 divisors (see below), whose sum is σ = 275062588284040. Its totient is φ = 177009328928160.

The previous prime is 221543164565557. The next prime is 221543164565587. The reversal of 221543164565575 is 575565461345122.

It is not a de Polignac number, because 221543164565575 - 2³⁵ = 221508804827207 is a prime.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5630048040 + ... + 5630087389.

Almost surely, 2^{221543164565575} is an apocalyptic number.

221543164565575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221543164565575 is a deficient number, since it is larger than the sum of its proper divisors (53519423718465).

221543164565575 is a wasteful number, since it uses less digits than its factorization.

221543164565575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11260136226 (or 11260136221 counting only the distinct ones).

The product of its digits is 151200000, while the sum is 61.

The spelling of 221543164565575 in words is "two hundred twenty-one trillion, five hundred forty-three billion, one hundred sixty-four million, five hundred sixty-five thousand, five hundred seventy-five".