6111104561 has 2 divisors, whose sum is σ = 6111104562. Its totient is φ = 6111104560.

The previous prime is 6111104551. The next prime is 6111104579. The reversal of 6111104561 is 1654011116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6102578161 + 8526400 = 78119^2 + 2920^2 .

It is a cyclic number.

It is not a de Polignac number, because 6111104561 - 2⁶ = 6111104497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6111104561.

It is not a weakly prime, because it can be changed into another prime (6111104551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055552280 + 3055552281.

It is an arithmetic number, because the mean of its divisors is an integer number (3055552281).

Almost surely, 2^6111104561 is an apocalyptic number.

It is an amenable number.

6111104561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6111104561 is an equidigital number, since it uses as much as digits as its factorization.

6111104561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 6111104561 is about 78173.5541023945. The cubic root of 6111104561 is about 1828.2681976090.

Adding to 6111104561 its reverse (1654011116), we get a palindrome (7765115677).

The spelling of 6111104561 in words is "six billion, one hundred eleven million, one hundred four thousand, five hundred sixty-one".