1160556561011 has 4 divisors (see below), whose sum is σ = 1200575752800. Its totient is φ = 1120537369224.

The previous prime is 1160556560993. The next prime is 1160556561061. The reversal of 1160556561011 is 1101656550611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1160556561011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1160556561061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20009595851 + ... + 20009595908.

It is an arithmetic number, because the mean of its divisors is an integer number (300143938200).

Almost surely, 2^{1160556561011} is an apocalyptic number.

1160556561011 is a deficient number, since it is larger than the sum of its proper divisors (40019191789).

1160556561011 is an equidigital number, since it uses as much as digits as its factorization.

1160556561011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40019191788.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 1160556561011 in words is "one trillion, one hundred sixty billion, five hundred fifty-six million, five hundred sixty-one thousand, eleven".