221543347152463 has 4 divisors (see below), whose sum is σ = 253192396745680. Its totient is φ = 189894297559248.

The previous prime is 221543347152437. The next prime is 221543347152467. The reversal of 221543347152463 is 364251743345122.

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 221543347152463 - 2²⁵ = 221543313598031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221543347152463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221543347152467) 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, 15824524796598 + ... + 15824524796611.

It is an arithmetic number, because the mean of its divisors is an integer number (63298099186420).

Almost surely, 2^{221543347152463} is an apocalyptic number.

221543347152463 is a deficient number, since it is larger than the sum of its proper divisors (31649049593217).

221543347152463 is an equidigital number, since it uses as much as digits as its factorization.

221543347152463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31649049593216.

The product of its digits is 14515200, while the sum is 52.

The spelling of 221543347152463 in words is "two hundred twenty-one trillion, five hundred forty-three billion, three hundred forty-seven million, one hundred fifty-two thousand, four hundred sixty-three".