561100011023 has 2 divisors, whose sum is σ = 561100011024. Its totient is φ = 561100011022.

The previous prime is 561100010969. The next prime is 561100011083. The reversal of 561100011023 is 320110001165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561100011023 - 2⁶ = 561100010959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561100010986 and 561100011004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561100011083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280550005511 + 280550005512.

It is an arithmetic number, because the mean of its divisors is an integer number (280550005512).

Almost surely, 2^561100011023 is an apocalyptic number.

561100011023 is a deficient number, since it is larger than the sum of its proper divisors (1).

561100011023 is an equidigital number, since it uses as much as digits as its factorization.

561100011023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 561100011023 its reverse (320110001165), we get a palindrome (881210012188).

The spelling of 561100011023 in words is "five hundred sixty-one billion, one hundred million, eleven thousand, twenty-three".