561101006111 has 2 divisors, whose sum is σ = 561101006112. Its totient is φ = 561101006110.

The previous prime is 561101006093. The next prime is 561101006131. The reversal of 561101006111 is 111600101165.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561101006111 - 2¹⁴ = 561100989727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561101006131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280550503055 + 280550503056.

It is an arithmetic number, because the mean of its divisors is an integer number (280550503056).

Almost surely, 2^561101006111 is an apocalyptic number.

561101006111 is a deficient number, since it is larger than the sum of its proper divisors (1).

561101006111 is an equidigital number, since it uses as much as digits as its factorization.

561101006111 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 23.

Adding to 561101006111 its reverse (111600101165), we get a palindrome (672701107276).

The spelling of 561101006111 in words is "five hundred sixty-one billion, one hundred one million, six thousand, one hundred eleven".