1110561000561 has 12 divisors (see below), whose sum is σ = 1604177397888. Its totient is φ = 740358432504.

The previous prime is 1110561000551. The next prime is 1110561000583. The reversal of 1110561000561 is 1650001650111.

It is not a de Polignac number, because 1110561000561 - 2⁷ = 1110561000433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1110561000551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 836925 + ... + 1709258.

It is an arithmetic number, because the mean of its divisors is an integer number (133681449824).

Almost surely, 2^{1110561000561} is an apocalyptic number.

It is an amenable number.

1110561000561 is a deficient number, since it is larger than the sum of its proper divisors (493616397327).

1110561000561 is a wasteful number, since it uses less digits than its factorization.

1110561000561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594652 (or 2594649 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

Adding to 1110561000561 its reverse (1650001650111), we get a palindrome (2760562650672).

The spelling of 1110561000561 in words is "one trillion, one hundred ten billion, five hundred sixty-one million, five hundred sixty-one", and thus it is an aban number.