561123000929 has 2 divisors, whose sum is σ = 561123000930. Its totient is φ = 561123000928.

The previous prime is 561123000871. The next prime is 561123000941. The reversal of 561123000929 is 929000321165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385079820304 + 176043180625 = 620548^2 + 419575^2 .

It is a cyclic number.

It is not a de Polignac number, because 561123000929 - 2⁸ = 561123000673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561123000892 and 561123000901.

It is not a weakly prime, because it can be changed into another prime (561123000029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280561500464 + 280561500465.

It is an arithmetic number, because the mean of its divisors is an integer number (280561500465).

Almost surely, 2^561123000929 is an apocalyptic number.

It is an amenable number.

561123000929 is a deficient number, since it is larger than the sum of its proper divisors (1).

561123000929 is an equidigital number, since it uses as much as digits as its factorization.

561123000929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 561123000929 in words is "five hundred sixty-one billion, one hundred twenty-three million, nine hundred twenty-nine", and thus it is an aban number.