1116661010505 has 16 divisors (see below), whose sum is σ = 1815947087424. Its totient is φ = 585789382080.

The previous prime is 1116661010501. The next prime is 1116661010593. The reversal of 1116661010505 is 5050101666111.

It is not a de Polignac number, because 1116661010505 - 2² = 1116661010501 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1116661010501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610196359 + ... + 610198188.

It is an arithmetic number, because the mean of its divisors is an integer number (113496692964).

Almost surely, 2^{1116661010505} is an apocalyptic number.

1116661010505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1116661010505 is a deficient number, since it is larger than the sum of its proper divisors (699286076919).

1116661010505 is a wasteful number, since it uses less digits than its factorization.

1116661010505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220394616.

The product of its (nonzero) digits is 5400, while the sum is 33.

Adding to 1116661010505 its reverse (5050101666111), we get a palindrome (6166762676616).

The spelling of 1116661010505 in words is "one trillion, one hundred sixteen billion, six hundred sixty-one million, ten thousand, five hundred five".