1075656116509 has 8 divisors (see below), whose sum is σ = 1171414613880. Its totient is φ = 981757007616.

The previous prime is 1075656116471. The next prime is 1075656116573. The reversal of 1075656116509 is 9056116565701.

It can be written as a sum of positive squares in 4 ways, for example, as 58079554009 + 1017576562500 = 240997^2 + 1008750^2 .

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-1075656116509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1075656116809) 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, 464845912 + ... + 464848225.

It is an arithmetic number, because the mean of its divisors is an integer number (146426826735).

Almost surely, 2^{1075656116509} is an apocalyptic number.

It is an amenable number.

1075656116509 is a deficient number, since it is larger than the sum of its proper divisors (95758497371).

1075656116509 is an equidigital number, since it uses as much as digits as its factorization.

1075656116509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929694239.

The product of its (nonzero) digits is 1701000, while the sum is 52.

The spelling of 1075656116509 in words is "one trillion, seventy-five billion, six hundred fifty-six million, one hundred sixteen thousand, five hundred nine".