220975817453 has 2 divisors, whose sum is σ = 220975817454. Its totient is φ = 220975817452.

The previous prime is 220975817423. The next prime is 220975817473. The reversal of 220975817453 is 354718579022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111664910569 + 109310906884 = 334163^2 + 330622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220975817453 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220975817395 and 220975817404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220975817423) 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 as a sum of consecutive naturals, namely, 110487908726 + 110487908727.

It is an arithmetic number, because the mean of its divisors is an integer number (110487908727).

Almost surely, 2^220975817453 is an apocalyptic number.

It is an amenable number.

220975817453 is a deficient number, since it is larger than the sum of its proper divisors (1).

220975817453 is an equidigital number, since it uses as much as digits as its factorization.

220975817453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 220975817453 in words is "two hundred twenty billion, nine hundred seventy-five million, eight hundred seventeen thousand, four hundred fifty-three".