1116566066561 has 8 divisors (see below), whose sum is σ = 1218159264384. Its totient is φ = 1014987400720.

The previous prime is 1116566066543. The next prime is 1116566066593. The reversal of 1116566066561 is 1656606656111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1116566066561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1116566066521) 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, 3472025 + ... + 3779958.

It is an arithmetic number, because the mean of its divisors is an integer number (152269908048).

Almost surely, 2^{1116566066561} is an apocalyptic number.

1116566066561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1116566066561 is a deficient number, since it is larger than the sum of its proper divisors (101593197823).

1116566066561 is a wasteful number, since it uses less digits than its factorization.

1116566066561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7265991.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 1116566066561 in words is "one trillion, one hundred sixteen billion, five hundred sixty-six million, sixty-six thousand, five hundred sixty-one".