221534403655183 has 2 divisors, whose sum is σ = 221534403655184. Its totient is φ = 221534403655182.

The previous prime is 221534403655153. The next prime is 221534403655199. The reversal of 221534403655183 is 381556304435122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221534403655183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221534403655183.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221534403655153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110767201827591 + 110767201827592.

It is an arithmetic number, because the mean of its divisors is an integer number (110767201827592).

Almost surely, 2^{221534403655183} is an apocalyptic number.

221534403655183 is a deficient number, since it is larger than the sum of its proper divisors (1).

221534403655183 is an equidigital number, since it uses as much as digits as its factorization.

221534403655183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368000, while the sum is 52.

The spelling of 221534403655183 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred three million, six hundred fifty-five thousand, one hundred eighty-three".