1113311141561 has 8 divisors (see below), whose sum is σ = 1149293030400. Its totient is φ = 1077333541920.

The previous prime is 1113311141557. The next prime is 1113311141587. The reversal of 1113311141561 is 1651411133111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1113311141561 - 2² = 1113311141557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113311141861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540596 + ... + 1587093.

It is an arithmetic number, because the mean of its divisors is an integer number (143661628800).

Almost surely, 2^{1113311141561} is an apocalyptic number.

It is an amenable number.

1113311141561 is a deficient number, since it is larger than the sum of its proper divisors (35981888839).

1113311141561 is a wasteful number, since it uses less digits than its factorization.

1113311141561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144599.

The product of its digits is 1080, while the sum is 29.

Adding to 1113311141561 its reverse (1651411133111), we get a palindrome (2764722274672).

The spelling of 1113311141561 in words is "one trillion, one hundred thirteen billion, three hundred eleven million, one hundred forty-one thousand, five hundred sixty-one".