1116564634561 has 8 divisors (see below), whose sum is σ = 1122818951520. Its totient is φ = 1110325122048.

The previous prime is 1116564634519. The next prime is 1116564634573. The reversal of 1116564634561 is 1654364656111.

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 1116564634561 - 2¹⁵ = 1116564601793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1116564634261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3549831 + ... + 3851548.

It is an arithmetic number, because the mean of its divisors is an integer number (140352368940).

Almost surely, 2^{1116564634561} is an apocalyptic number.

It is an amenable number.

1116564634561 is a deficient number, since it is larger than the sum of its proper divisors (6254316959).

1116564634561 is an equidigital number, since it uses as much as digits as its factorization.

1116564634561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7402223.

The product of its digits is 1555200, while the sum is 49.

The spelling of 1116564634561 in words is "one trillion, one hundred sixteen billion, five hundred sixty-four million, six hundred thirty-four thousand, five hundred sixty-one".