561460643424223 has 4 divisors (see below), whose sum is σ = 561744352695240. Its totient is φ = 561176934153208.

The previous prime is 561460643424151. The next prime is 561460643424229. The reversal of 561460643424223 is 322424346064165.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561460643424223 is a prime.

It is a super-2 number, since 2×561460643424223² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561460643424229) 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, 141854632540 + ... + 141854636497.

It is an arithmetic number, because the mean of its divisors is an integer number (140436088173810).

Almost surely, 2^{561460643424223} is an apocalyptic number.

561460643424223 is a deficient number, since it is larger than the sum of its proper divisors (283709271017).

561460643424223 is a wasteful number, since it uses less digits than its factorization.

561460643424223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283709271016.

The product of its (nonzero) digits is 19906560, while the sum is 52.

Adding to 561460643424223 its reverse (322424346064165), we get a palindrome (883884989488388).

The spelling of 561460643424223 in words is "five hundred sixty-one trillion, four hundred sixty billion, six hundred forty-three million, four hundred twenty-four thousand, two hundred twenty-three".