223405441451453 has 4 divisors (see below), whose sum is σ = 228854354657628. Its totient is φ = 217956528245280.

The previous prime is 223405441451407. The next prime is 223405441451497. The reversal of 223405441451453 is 354154144504322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33879640466884 + 189525800984569 = 5820622^2 + 13766837^2 .

It is a cyclic number.

It is not a de Polignac number, because 223405441451453 - 2⁶ = 223405441451389 is a prime.

It is a super-2 number, since 2×223405441451453² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223405441451398 and 223405441451407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223405441457453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2724456603026 + ... + 2724456603107.

It is an arithmetic number, because the mean of its divisors is an integer number (57213588664407).

Almost surely, 2^{223405441451453} is an apocalyptic number.

It is an amenable number.

223405441451453 is a deficient number, since it is larger than the sum of its proper divisors (5448913206175).

223405441451453 is an equidigital number, since it uses as much as digits as its factorization.

223405441451453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5448913206174.

The product of its (nonzero) digits is 4608000, while the sum is 47.

Adding to 223405441451453 its reverse (354154144504322), we get a palindrome (577559585955775).

The spelling of 223405441451453 in words is "two hundred twenty-three trillion, four hundred five billion, four hundred forty-one million, four hundred fifty-one thousand, four hundred fifty-three".